Home / 90,078.12-124,320.15-51,836.88

Finding the Fourth Proportional to 90,078.12, 124,320.15 and 51,836.88

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Solution

The fourth proportional to 90,078.12, 124,320.15 and 51,836.88 is: 71,542.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.12 : 124,320.15 = 51,836.88 : x
  2. Step 2: Convert to fraction form
    90,078.12/124,320.15 = 51,836.88/x
  3. Step 3: Cross multiply
    90,078.12x = 124,320.15 × 51,836.88
  4. Step 4: Simplify right side
    90,078.12x = 6,444,368,697.13
  5. Step 5: Solve for x
    x = 6,444,368,697.13/90,078.12
  6. Step 6: Final answer
    x = 71,542.00

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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.