Home / 90,400.43-124,802.25-61,763.15

Finding the Fourth Proportional to 90,400.43, 124,802.25 and 61,763.15

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Solution

The fourth proportional to 90,400.43, 124,802.25 and 61,763.15 is: 85,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.43 : 124,802.25 = 61,763.15 : x
  2. Step 2: Convert to fraction form
    90,400.43/124,802.25 = 61,763.15/x
  3. Step 3: Cross multiply
    90,400.43x = 124,802.25 × 61,763.15
  4. Step 4: Simplify right side
    90,400.43x = 7,708,180,087.09
  5. Step 5: Solve for x
    x = 7,708,180,087.09/90,400.43
  6. Step 6: Final answer
    x = 85,267.07

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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.