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Finding the Fourth Proportional to 77,117.40, 115,589.70 and 32,736.60

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Solution

The fourth proportional to 77,117.40, 115,589.70 and 32,736.60 is: 49,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,117.40 : 115,589.70 = 32,736.60 : x
  2. Step 2: Convert to fraction form
    77,117.40/115,589.70 = 32,736.60/x
  3. Step 3: Cross multiply
    77,117.40x = 115,589.70 × 32,736.60
  4. Step 4: Simplify right side
    77,117.40x = 3,784,013,773.02
  5. Step 5: Solve for x
    x = 3,784,013,773.02/77,117.40
  6. Step 6: Final answer
    x = 49,068.22

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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.