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Finding the Fourth Proportional to 55,318,672.20, 82,978,008.30 and 52,484,320.20

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Solution

The fourth proportional to 55,318,672.20, 82,978,008.30 and 52,484,320.20 is: 78,726,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,318,672.20 : 82,978,008.30 = 52,484,320.20 : x
  2. Step 2: Convert to fraction form
    55,318,672.20/82,978,008.30 = 52,484,320.20/x
  3. Step 3: Cross multiply
    55,318,672.20x = 82,978,008.30 × 52,484,320.20
  4. Step 4: Simplify right side
    55,318,672.20x = 4,355,044,357,175,458
  5. Step 5: Solve for x
    x = 4,355,044,357,175,458/55,318,672.20
  6. Step 6: Final answer
    x = 78,726,480.30

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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.