Home / 91,430.76-126,186.12-51,146.76

Finding the Fourth Proportional to 91,430.76, 126,186.12 and 51,146.76

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Solution

The fourth proportional to 91,430.76, 126,186.12 and 51,146.76 is: 70,589.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,430.76 : 126,186.12 = 51,146.76 : x
  2. Step 2: Convert to fraction form
    91,430.76/126,186.12 = 51,146.76/x
  3. Step 3: Cross multiply
    91,430.76x = 126,186.12 × 51,146.76
  4. Step 4: Simplify right side
    91,430.76x = 6,454,011,194.97
  5. Step 5: Solve for x
    x = 6,454,011,194.97/91,430.76
  6. Step 6: Final answer
    x = 70,589.06

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Half scale
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Double scale
Find fourth proportional to 91,431.76, 126,187.50 and 51,147.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.