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Finding the Fourth Proportional to 91,429.76, 126,184.74 and 51,145.76

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Solution

The fourth proportional to 91,429.76, 126,184.74 and 51,145.76 is: 70,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,429.76 : 126,184.74 = 51,145.76 : x
  2. Step 2: Convert to fraction form
    91,429.76/126,184.74 = 51,145.76/x
  3. Step 3: Cross multiply
    91,429.76x = 126,184.74 × 51,145.76
  4. Step 4: Simplify right side
    91,429.76x = 6,453,814,427.70
  5. Step 5: Solve for x
    x = 6,453,814,427.70/91,429.76
  6. Step 6: Final answer
    x = 70,587.68

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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.