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Finding the Fourth Proportional to 77,898.56, 116,810.85 and 40,421.12

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Solution

The fourth proportional to 77,898.56, 116,810.85 and 40,421.12 is: 60,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.56 : 116,810.85 = 40,421.12 : x
  2. Step 2: Convert to fraction form
    77,898.56/116,810.85 = 40,421.12/x
  3. Step 3: Cross multiply
    77,898.56x = 116,810.85 × 40,421.12
  4. Step 4: Simplify right side
    77,898.56x = 4,721,625,385.15
  5. Step 5: Solve for x
    x = 4,721,625,385.15/77,898.56
  6. Step 6: Final answer
    x = 60,612.49

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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.