Home / 90,588.20-124,946.60-56,121.75

Finding the Fourth Proportional to 90,588.20, 124,946.60 and 56,121.75

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Solution

The fourth proportional to 90,588.20, 124,946.60 and 56,121.75 is: 77,407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,588.20 : 124,946.60 = 56,121.75 : x
  2. Step 2: Convert to fraction form
    90,588.20/124,946.60 = 56,121.75/x
  3. Step 3: Cross multiply
    90,588.20x = 124,946.60 × 56,121.75
  4. Step 4: Simplify right side
    90,588.20x = 7,012,221,567.94
  5. Step 5: Solve for x
    x = 7,012,221,567.94/90,588.20
  6. Step 6: Final answer
    x = 77,407.68

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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.