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Finding the Fourth Proportional to 77,695.11, 116,739.68 and 72,470.88

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Solution

The fourth proportional to 77,695.11, 116,739.68 and 72,470.88 is: 108,890.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,695.11 : 116,739.68 = 72,470.88 : x
  2. Step 2: Convert to fraction form
    77,695.11/116,739.68 = 72,470.88/x
  3. Step 3: Cross multiply
    77,695.11x = 116,739.68 × 72,470.88
  4. Step 4: Simplify right side
    77,695.11x = 8,460,226,978.16
  5. Step 5: Solve for x
    x = 8,460,226,978.16/77,695.11
  6. Step 6: Final answer
    x = 108,890.08

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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.