Home / 56,627.61-78,144.11-31,133.78

Finding the Fourth Proportional to 56,627.61, 78,144.11 and 31,133.78

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Solution

The fourth proportional to 56,627.61, 78,144.11 and 31,133.78 is: 42,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,627.61 : 78,144.11 = 31,133.78 : x
  2. Step 2: Convert to fraction form
    56,627.61/78,144.11 = 31,133.78/x
  3. Step 3: Cross multiply
    56,627.61x = 78,144.11 × 31,133.78
  4. Step 4: Simplify right side
    56,627.61x = 2,432,921,590.33
  5. Step 5: Solve for x
    x = 2,432,921,590.33/56,627.61
  6. Step 6: Final answer
    x = 42,963.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.