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Finding the Fourth Proportional to 29,151.20, 43,737.60 and 28,071.20

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Solution

The fourth proportional to 29,151.20, 43,737.60 and 28,071.20 is: 42,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,151.20 : 43,737.60 = 28,071.20 : x
  2. Step 2: Convert to fraction form
    29,151.20/43,737.60 = 28,071.20/x
  3. Step 3: Cross multiply
    29,151.20x = 43,737.60 × 28,071.20
  4. Step 4: Simplify right side
    29,151.20x = 1,227,766,917.12
  5. Step 5: Solve for x
    x = 1,227,766,917.12/29,151.20
  6. Step 6: Final answer
    x = 42,117.20

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1.5x scale

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.