Home / 45,319.12-67,988.40-19,008.70

Finding the Fourth Proportional to 45,319.12, 67,988.40 and 19,008.70

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Solution

The fourth proportional to 45,319.12, 67,988.40 and 19,008.70 is: 28,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,319.12 : 67,988.40 = 19,008.70 : x
  2. Step 2: Convert to fraction form
    45,319.12/67,988.40 = 19,008.70/x
  3. Step 3: Cross multiply
    45,319.12x = 67,988.40 × 19,008.70
  4. Step 4: Simplify right side
    45,319.12x = 1,292,371,099.08
  5. Step 5: Solve for x
    x = 1,292,371,099.08/45,319.12
  6. Step 6: Final answer
    x = 28,517.13

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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.