Home / 78,222.22-117,343.05-25,613.53

Finding the Fourth Proportional to 78,222.22, 117,343.05 and 25,613.53

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Solution

The fourth proportional to 78,222.22, 117,343.05 and 25,613.53 is: 38,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,222.22 : 117,343.05 = 25,613.53 : x
  2. Step 2: Convert to fraction form
    78,222.22/117,343.05 = 25,613.53/x
  3. Step 3: Cross multiply
    78,222.22x = 117,343.05 × 25,613.53
  4. Step 4: Simplify right side
    78,222.22x = 3,005,569,731.47
  5. Step 5: Solve for x
    x = 3,005,569,731.47/78,222.22
  6. Step 6: Final answer
    x = 38,423.48

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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.