Home / 78,287.16-117,437.10-22,127.76

Finding the Fourth Proportional to 78,287.16, 117,437.10 and 22,127.76

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Solution

The fourth proportional to 78,287.16, 117,437.10 and 22,127.76 is: 33,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287.16 : 117,437.10 = 22,127.76 : x
  2. Step 2: Convert to fraction form
    78,287.16/117,437.10 = 22,127.76/x
  3. Step 3: Cross multiply
    78,287.16x = 117,437.10 × 22,127.76
  4. Step 4: Simplify right side
    78,287.16x = 2,598,619,963.90
  5. Step 5: Solve for x
    x = 2,598,619,963.90/78,287.16
  6. Step 6: Final answer
    x = 33,193.44

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1.5x scale

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.