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Finding the Fourth Proportional to 90,525.60, 124,986.24 and 69,266.88

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Solution

The fourth proportional to 90,525.60, 124,986.24 and 69,266.88 is: 95,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,525.60 : 124,986.24 = 69,266.88 : x
  2. Step 2: Convert to fraction form
    90,525.60/124,986.24 = 69,266.88/x
  3. Step 3: Cross multiply
    90,525.60x = 124,986.24 × 69,266.88
  4. Step 4: Simplify right side
    90,525.60x = 8,657,406,887.73
  5. Step 5: Solve for x
    x = 8,657,406,887.73/90,525.60
  6. Step 6: Final answer
    x = 95,634.90

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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.