Home / 90,007.14-124,210.09-49,720.10

Finding the Fourth Proportional to 90,007.14, 124,210.09 and 49,720.10

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Solution

The fourth proportional to 90,007.14, 124,210.09 and 49,720.10 is: 68,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,007.14 : 124,210.09 = 49,720.10 : x
  2. Step 2: Convert to fraction form
    90,007.14/124,210.09 = 49,720.10/x
  3. Step 3: Cross multiply
    90,007.14x = 124,210.09 × 49,720.10
  4. Step 4: Simplify right side
    90,007.14x = 6,175,738,095.81
  5. Step 5: Solve for x
    x = 6,175,738,095.81/90,007.14
  6. Step 6: Final answer
    x = 68,613.87

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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.