Home / 90,625.82-125,109.08-56,653.20

Finding the Fourth Proportional to 90,625.82, 125,109.08 and 56,653.20

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Solution

The fourth proportional to 90,625.82, 125,109.08 and 56,653.20 is: 78,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,625.82 : 125,109.08 = 56,653.20 : x
  2. Step 2: Convert to fraction form
    90,625.82/125,109.08 = 56,653.20/x
  3. Step 3: Cross multiply
    90,625.82x = 125,109.08 × 56,653.20
  4. Step 4: Simplify right side
    90,625.82x = 7,087,829,447.79
  5. Step 5: Solve for x
    x = 7,087,829,447.79/90,625.82
  6. Step 6: Final answer
    x = 78,209.83

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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.