Home / 56,113.20-77,436-30,962.88

Finding the Fourth Proportional to 56,113.20, 77,436 and 30,962.88

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Solution

The fourth proportional to 56,113.20, 77,436 and 30,962.88 is: 42,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,113.20 : 77,436 = 30,962.88 : x
  2. Step 2: Convert to fraction form
    56,113.20/77,436 = 30,962.88/x
  3. Step 3: Cross multiply
    56,113.20x = 77,436 × 30,962.88
  4. Step 4: Simplify right side
    56,113.20x = 2,397,641,575.68
  5. Step 5: Solve for x
    x = 2,397,641,575.68/56,113.20
  6. Step 6: Final answer
    x = 42,728.66

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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.