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Finding the Fourth Proportional to 72,242,353.80, 108,363,530.70 and 29,132,209.80

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Solution

The fourth proportional to 72,242,353.80, 108,363,530.70 and 29,132,209.80 is: 43,698,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,242,353.80 : 108,363,530.70 = 29,132,209.80 : x
  2. Step 2: Convert to fraction form
    72,242,353.80/108,363,530.70 = 29,132,209.80/x
  3. Step 3: Cross multiply
    72,242,353.80x = 108,363,530.70 × 29,132,209.80
  4. Step 4: Simplify right side
    72,242,353.80x = 3,156,869,111,021,141
  5. Step 5: Solve for x
    x = 3,156,869,111,021,141/72,242,353.80
  6. Step 6: Final answer
    x = 43,698,314.70

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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.