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Finding the Fourth Proportional to 61,715.60, 85,167.84 and 33,421.40

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Solution

The fourth proportional to 61,715.60, 85,167.84 and 33,421.40 is: 46,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,715.60 : 85,167.84 = 33,421.40 : x
  2. Step 2: Convert to fraction form
    61,715.60/85,167.84 = 33,421.40/x
  3. Step 3: Cross multiply
    61,715.60x = 85,167.84 × 33,421.40
  4. Step 4: Simplify right side
    61,715.60x = 2,846,428,447.78
  5. Step 5: Solve for x
    x = 2,846,428,447.78/61,715.60
  6. Step 6: Final answer
    x = 46,121.70

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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.