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Finding the Fourth Proportional to 91,147.78, 125,810.33 and 52,915.92

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Solution

The fourth proportional to 91,147.78, 125,810.33 and 52,915.92 is: 73,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,147.78 : 125,810.33 = 52,915.92 : x
  2. Step 2: Convert to fraction form
    91,147.78/125,810.33 = 52,915.92/x
  3. Step 3: Cross multiply
    91,147.78x = 125,810.33 × 52,915.92
  4. Step 4: Simplify right side
    91,147.78x = 6,657,369,357.45
  5. Step 5: Solve for x
    x = 6,657,369,357.45/91,147.78
  6. Step 6: Final answer
    x = 73,039.29

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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.