Home / 90,831.60-125,350.50-56,829.18

Finding the Fourth Proportional to 90,831.60, 125,350.50 and 56,829.18

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Solution

The fourth proportional to 90,831.60, 125,350.50 and 56,829.18 is: 78,426.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.60 : 125,350.50 = 56,829.18 : x
  2. Step 2: Convert to fraction form
    90,831.60/125,350.50 = 56,829.18/x
  3. Step 3: Cross multiply
    90,831.60x = 125,350.50 × 56,829.18
  4. Step 4: Simplify right side
    90,831.60x = 7,123,566,127.59
  5. Step 5: Solve for x
    x = 7,123,566,127.59/90,831.60
  6. Step 6: Final answer
    x = 78,426.08

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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.