Home / 115,017.61-172,569.25-51,818.78

Finding the Fourth Proportional to 115,017.61, 172,569.25 and 51,818.78

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Solution

The fourth proportional to 115,017.61, 172,569.25 and 51,818.78 is: 77,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,017.61 : 172,569.25 = 51,818.78 : x
  2. Step 2: Convert to fraction form
    115,017.61/172,569.25 = 51,818.78/x
  3. Step 3: Cross multiply
    115,017.61x = 172,569.25 × 51,818.78
  4. Step 4: Simplify right side
    115,017.61x = 8,942,328,000.52
  5. Step 5: Solve for x
    x = 8,942,328,000.52/115,017.61
  6. Step 6: Final answer
    x = 77,747.47

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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.