Home / 90,211.20-124,499.52-49,934.40

Finding the Fourth Proportional to 90,211.20, 124,499.52 and 49,934.40

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Solution

The fourth proportional to 90,211.20, 124,499.52 and 49,934.40 is: 68,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,211.20 : 124,499.52 = 49,934.40 : x
  2. Step 2: Convert to fraction form
    90,211.20/124,499.52 = 49,934.40/x
  3. Step 3: Cross multiply
    90,211.20x = 124,499.52 × 49,934.40
  4. Step 4: Simplify right side
    90,211.20x = 6,216,808,831.49
  5. Step 5: Solve for x
    x = 6,216,808,831.49/90,211.20
  6. Step 6: Final answer
    x = 68,913.94

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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.