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Finding the Fourth Proportional to 28,995,248.40, 43,506,869.40 and 20,457,200.40

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Solution

The fourth proportional to 28,995,248.40, 43,506,869.40 and 20,457,200.40 is: 30,695,675.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995,248.40 : 43,506,869.40 = 20,457,200.40 : x
  2. Step 2: Convert to fraction form
    28,995,248.40/43,506,869.40 = 20,457,200.40/x
  3. Step 3: Cross multiply
    28,995,248.40x = 43,506,869.40 × 20,457,200.40
  4. Step 4: Simplify right side
    28,995,248.40x = 890,028,746,092,427.62
  5. Step 5: Solve for x
    x = 890,028,746,092,427.62/28,995,248.40
  6. Step 6: Final answer
    x = 30,695,675.85

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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.