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Finding the Fourth Proportional to 57,601.80, 86,402.70 and 39,887.10

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Solution

The fourth proportional to 57,601.80, 86,402.70 and 39,887.10 is: 59,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,601.80 : 86,402.70 = 39,887.10 : x
  2. Step 2: Convert to fraction form
    57,601.80/86,402.70 = 39,887.10/x
  3. Step 3: Cross multiply
    57,601.80x = 86,402.70 × 39,887.10
  4. Step 4: Simplify right side
    57,601.80x = 3,446,353,135.17
  5. Step 5: Solve for x
    x = 3,446,353,135.17/57,601.80
  6. Step 6: Final answer
    x = 59,830.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.