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Finding the Fourth Proportional to 42,607.64, 63,919.66 and 19,234.08

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Solution

The fourth proportional to 42,607.64, 63,919.66 and 19,234.08 is: 28,854.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,607.64 : 63,919.66 = 19,234.08 : x
  2. Step 2: Convert to fraction form
    42,607.64/63,919.66 = 19,234.08/x
  3. Step 3: Cross multiply
    42,607.64x = 63,919.66 × 19,234.08
  4. Step 4: Simplify right side
    42,607.64x = 1,229,435,854.01
  5. Step 5: Solve for x
    x = 1,229,435,854.01/42,607.64
  6. Step 6: Final answer
    x = 28,854.82

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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.