Home / 78,213.01-107,925.88-47,999.61

Finding the Fourth Proportional to 78,213.01, 107,925.88 and 47,999.61

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Solution

The fourth proportional to 78,213.01, 107,925.88 and 47,999.61 is: 66,234.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213.01 : 107,925.88 = 47,999.61 : x
  2. Step 2: Convert to fraction form
    78,213.01/107,925.88 = 47,999.61/x
  3. Step 3: Cross multiply
    78,213.01x = 107,925.88 × 47,999.61
  4. Step 4: Simplify right side
    78,213.01x = 5,180,400,148.91
  5. Step 5: Solve for x
    x = 5,180,400,148.91/78,213.01
  6. Step 6: Final answer
    x = 66,234.51

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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.