Home / 87,802.80-131,690.84-28,638.38

Finding the Fourth Proportional to 87,802.80, 131,690.84 and 28,638.38

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Solution

The fourth proportional to 87,802.80, 131,690.84 and 28,638.38 is: 42,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,802.80 : 131,690.84 = 28,638.38 : x
  2. Step 2: Convert to fraction form
    87,802.80/131,690.84 = 28,638.38/x
  3. Step 3: Cross multiply
    87,802.80x = 131,690.84 × 28,638.38
  4. Step 4: Simplify right side
    87,802.80x = 3,771,411,516.79
  5. Step 5: Solve for x
    x = 3,771,411,516.79/87,802.80
  6. Step 6: Final answer
    x = 42,953.20

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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.