Home / 90,831.93-125,349.20-50,000.78

Finding the Fourth Proportional to 90,831.93, 125,349.20 and 50,000.78

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Solution

The fourth proportional to 90,831.93, 125,349.20 and 50,000.78 is: 69,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.93 : 125,349.20 = 50,000.78 : x
  2. Step 2: Convert to fraction form
    90,831.93/125,349.20 = 50,000.78/x
  3. Step 3: Cross multiply
    90,831.93x = 125,349.20 × 50,000.78
  4. Step 4: Simplify right side
    90,831.93x = 6,267,557,270.63
  5. Step 5: Solve for x
    x = 6,267,557,270.63/90,831.93
  6. Step 6: Final answer
    x = 69,001.70

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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.