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Finding the Fourth Proportional to 42,484.95, 63,723.28 and 12,903.04

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Solution

The fourth proportional to 42,484.95, 63,723.28 and 12,903.04 is: 19,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,484.95 : 63,723.28 = 12,903.04 : x
  2. Step 2: Convert to fraction form
    42,484.95/63,723.28 = 12,903.04/x
  3. Step 3: Cross multiply
    42,484.95x = 63,723.28 × 12,903.04
  4. Step 4: Simplify right side
    42,484.95x = 822,223,839.21
  5. Step 5: Solve for x
    x = 822,223,839.21/42,484.95
  6. Step 6: Final answer
    x = 19,353.30

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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.