Home / 90,440.55-124,664.10-71,289.25

Finding the Fourth Proportional to 90,440.55, 124,664.10 and 71,289.25

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Solution

The fourth proportional to 90,440.55, 124,664.10 and 71,289.25 is: 98,265.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,440.55 : 124,664.10 = 71,289.25 : x
  2. Step 2: Convert to fraction form
    90,440.55/124,664.10 = 71,289.25/x
  3. Step 3: Cross multiply
    90,440.55x = 124,664.10 × 71,289.25
  4. Step 4: Simplify right side
    90,440.55x = 8,887,209,611.93
  5. Step 5: Solve for x
    x = 8,887,209,611.93/90,440.55
  6. Step 6: Final answer
    x = 98,265.76

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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.