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Finding the Fourth Proportional to 91,675.69, 126,512.29 and 51,389.48

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Solution

The fourth proportional to 91,675.69, 126,512.29 and 51,389.48 is: 70,917.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,675.69 : 126,512.29 = 51,389.48 : x
  2. Step 2: Convert to fraction form
    91,675.69/126,512.29 = 51,389.48/x
  3. Step 3: Cross multiply
    91,675.69x = 126,512.29 × 51,389.48
  4. Step 4: Simplify right side
    91,675.69x = 6,501,400,796.71
  5. Step 5: Solve for x
    x = 6,501,400,796.71/91,675.69
  6. Step 6: Final answer
    x = 70,917.39

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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.