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Finding the Fourth Proportional to 99,630,505.80, 149,508,744.30 and 58,689,865.80

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Solution

The fourth proportional to 99,630,505.80, 149,508,744.30 and 58,689,865.80 is: 88,071,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630,505.80 : 149,508,744.30 = 58,689,865.80 : x
  2. Step 2: Convert to fraction form
    99,630,505.80/149,508,744.30 = 58,689,865.80/x
  3. Step 3: Cross multiply
    99,630,505.80x = 149,508,744.30 × 58,689,865.80
  4. Step 4: Simplify right side
    99,630,505.80x = 8,774,648,138,893,515
  5. Step 5: Solve for x
    x = 8,774,648,138,893,515/99,630,505.80
  6. Step 6: Final answer
    x = 88,071,901.96

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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.