Home / 90,909.15-125,454.63-52,690.87

Finding the Fourth Proportional to 90,909.15, 125,454.63 and 52,690.87

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Solution

The fourth proportional to 90,909.15, 125,454.63 and 52,690.87 is: 72,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.15 : 125,454.63 = 52,690.87 : x
  2. Step 2: Convert to fraction form
    90,909.15/125,454.63 = 52,690.87/x
  3. Step 3: Cross multiply
    90,909.15x = 125,454.63 × 52,690.87
  4. Step 4: Simplify right side
    90,909.15x = 6,610,313,658.25
  5. Step 5: Solve for x
    x = 6,610,313,658.25/90,909.15
  6. Step 6: Final answer
    x = 72,713.40

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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.