Home / 90,678.17-125,147.37-54,868.47

Finding the Fourth Proportional to 90,678.17, 125,147.37 and 54,868.47

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Solution

The fourth proportional to 90,678.17, 125,147.37 and 54,868.47 is: 75,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.17 : 125,147.37 = 54,868.47 : x
  2. Step 2: Convert to fraction form
    90,678.17/125,147.37 = 54,868.47/x
  3. Step 3: Cross multiply
    90,678.17x = 125,147.37 × 54,868.47
  4. Step 4: Simplify right side
    90,678.17x = 6,866,644,716.42
  5. Step 5: Solve for x
    x = 6,866,644,716.42/90,678.17
  6. Step 6: Final answer
    x = 75,725.45

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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.