Home / 78,728.13-118,112.18-23,324.13

Finding the Fourth Proportional to 78,728.13, 118,112.18 and 23,324.13

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Solution

The fourth proportional to 78,728.13, 118,112.18 and 23,324.13 is: 34,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,728.13 : 118,112.18 = 23,324.13 : x
  2. Step 2: Convert to fraction form
    78,728.13/118,112.18 = 23,324.13/x
  3. Step 3: Cross multiply
    78,728.13x = 118,112.18 × 23,324.13
  4. Step 4: Simplify right side
    78,728.13x = 2,754,863,840.90
  5. Step 5: Solve for x
    x = 2,754,863,840.90/78,728.13
  6. Step 6: Final answer
    x = 34,992.12

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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.