Home / 90,019.20-124,225.38-49,730.12

Finding the Fourth Proportional to 90,019.20, 124,225.38 and 49,730.12

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Solution

The fourth proportional to 90,019.20, 124,225.38 and 49,730.12 is: 68,626.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,019.20 : 124,225.38 = 49,730.12 : x
  2. Step 2: Convert to fraction form
    90,019.20/124,225.38 = 49,730.12/x
  3. Step 3: Cross multiply
    90,019.20x = 124,225.38 × 49,730.12
  4. Step 4: Simplify right side
    90,019.20x = 6,177,742,433.32
  5. Step 5: Solve for x
    x = 6,177,742,433.32/90,019.20
  6. Step 6: Final answer
    x = 68,626.94

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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.