Home / 52,312.38-78,500.88-20,717.12

Finding the Fourth Proportional to 52,312.38, 78,500.88 and 20,717.12

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Solution

The fourth proportional to 52,312.38, 78,500.88 and 20,717.12 is: 31,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,312.38 : 78,500.88 = 20,717.12 : x
  2. Step 2: Convert to fraction form
    52,312.38/78,500.88 = 20,717.12/x
  3. Step 3: Cross multiply
    52,312.38x = 78,500.88 × 20,717.12
  4. Step 4: Simplify right side
    52,312.38x = 1,626,312,151.07
  5. Step 5: Solve for x
    x = 1,626,312,151.07/52,312.38
  6. Step 6: Final answer
    x = 31,088.48

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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.