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Finding the Fourth Proportional to 73,176.62, 109,737.38 and 28,779.10

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Solution

The fourth proportional to 73,176.62, 109,737.38 and 28,779.10 is: 43,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,176.62 : 109,737.38 = 28,779.10 : x
  2. Step 2: Convert to fraction form
    73,176.62/109,737.38 = 28,779.10/x
  3. Step 3: Cross multiply
    73,176.62x = 109,737.38 × 28,779.10
  4. Step 4: Simplify right side
    73,176.62x = 3,158,142,830.36
  5. Step 5: Solve for x
    x = 3,158,142,830.36/73,176.62
  6. Step 6: Final answer
    x = 43,157.82

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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.