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Finding the Fourth Proportional to 77,487.68, 106,932 and 45,657.92

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Solution

The fourth proportional to 77,487.68, 106,932 and 45,657.92 is: 63,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,487.68 : 106,932 = 45,657.92 : x
  2. Step 2: Convert to fraction form
    77,487.68/106,932 = 45,657.92/x
  3. Step 3: Cross multiply
    77,487.68x = 106,932 × 45,657.92
  4. Step 4: Simplify right side
    77,487.68x = 4,882,292,701.44
  5. Step 5: Solve for x
    x = 4,882,292,701.44/77,487.68
  6. Step 6: Final answer
    x = 63,007.34

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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.