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Finding the Fourth Proportional to 61,915.60, 85,445.24 and 36,423.80

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Solution

The fourth proportional to 61,915.60, 85,445.24 and 36,423.80 is: 50,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,915.60 : 85,445.24 = 36,423.80 : x
  2. Step 2: Convert to fraction form
    61,915.60/85,445.24 = 36,423.80/x
  3. Step 3: Cross multiply
    61,915.60x = 85,445.24 × 36,423.80
  4. Step 4: Simplify right side
    61,915.60x = 3,112,240,332.71
  5. Step 5: Solve for x
    x = 3,112,240,332.71/61,915.60
  6. Step 6: Final answer
    x = 50,265.85

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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.