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Finding the Fourth Proportional to 77,808.47, 107,377.79 and 43,818.17

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Solution

The fourth proportional to 77,808.47, 107,377.79 and 43,818.17 is: 60,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,808.47 : 107,377.79 = 43,818.17 : x
  2. Step 2: Convert to fraction form
    77,808.47/107,377.79 = 43,818.17/x
  3. Step 3: Cross multiply
    77,808.47x = 107,377.79 × 43,818.17
  4. Step 4: Simplify right side
    77,808.47x = 4,705,097,500.46
  5. Step 5: Solve for x
    x = 4,705,097,500.46/77,808.47
  6. Step 6: Final answer
    x = 60,470.25

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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.