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Finding the Fourth Proportional to 99,878,406, 149,817,609 and 28,074,822

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Solution

The fourth proportional to 99,878,406, 149,817,609 and 28,074,822 is: 42,112,233

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,878,406 : 149,817,609 = 28,074,822 : x
  2. Step 2: Convert to fraction form
    99,878,406/149,817,609 = 28,074,822/x
  3. Step 3: Cross multiply
    99,878,406x = 149,817,609 × 28,074,822
  4. Step 4: Simplify right side
    99,878,406x = 4,206,102,705,140,598
  5. Step 5: Solve for x
    x = 4,206,102,705,140,598/99,878,406
  6. Step 6: Final answer
    x = 42,112,233

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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.