Home / 40,878.50-61,337.18-18,690.17

Finding the Fourth Proportional to 40,878.50, 61,337.18 and 18,690.17

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Solution

The fourth proportional to 40,878.50, 61,337.18 and 18,690.17 is: 28,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,878.50 : 61,337.18 = 18,690.17 : x
  2. Step 2: Convert to fraction form
    40,878.50/61,337.18 = 18,690.17/x
  3. Step 3: Cross multiply
    40,878.50x = 61,337.18 × 18,690.17
  4. Step 4: Simplify right side
    40,878.50x = 1,146,402,061.56
  5. Step 5: Solve for x
    x = 1,146,402,061.56/40,878.50
  6. Step 6: Final answer
    x = 28,044.14

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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.