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Finding the Fourth Proportional to 28,006,553.70, 42,009,830.55 and 8,839,248.30

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Solution

The fourth proportional to 28,006,553.70, 42,009,830.55 and 8,839,248.30 is: 13,258,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006,553.70 : 42,009,830.55 = 8,839,248.30 : x
  2. Step 2: Convert to fraction form
    28,006,553.70/42,009,830.55 = 8,839,248.30/x
  3. Step 3: Cross multiply
    28,006,553.70x = 42,009,830.55 × 8,839,248.30
  4. Step 4: Simplify right side
    28,006,553.70x = 371,335,323,272,375.56
  5. Step 5: Solve for x
    x = 371,335,323,272,375.56/28,006,553.70
  6. Step 6: Final answer
    x = 13,258,872.45

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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.