Home / 42,079.62-63,125.81-12,493.77

Finding the Fourth Proportional to 42,079.62, 63,125.81 and 12,493.77

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Solution

The fourth proportional to 42,079.62, 63,125.81 and 12,493.77 is: 18,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,079.62 : 63,125.81 = 12,493.77 : x
  2. Step 2: Convert to fraction form
    42,079.62/63,125.81 = 12,493.77/x
  3. Step 3: Cross multiply
    42,079.62x = 63,125.81 × 12,493.77
  4. Step 4: Simplify right side
    42,079.62x = 788,679,351.20
  5. Step 5: Solve for x
    x = 788,679,351.20/42,079.62
  6. Step 6: Final answer
    x = 18,742.55

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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.