Home / 91,938.79-126,877.46-51,655.15

Finding the Fourth Proportional to 91,938.79, 126,877.46 and 51,655.15

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Solution

The fourth proportional to 91,938.79, 126,877.46 and 51,655.15 is: 71,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,938.79 : 126,877.46 = 51,655.15 : x
  2. Step 2: Convert to fraction form
    91,938.79/126,877.46 = 51,655.15/x
  3. Step 3: Cross multiply
    91,938.79x = 126,877.46 × 51,655.15
  4. Step 4: Simplify right side
    91,938.79x = 6,553,874,227.92
  5. Step 5: Solve for x
    x = 6,553,874,227.92/91,938.79
  6. Step 6: Final answer
    x = 71,285.19

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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.