Home / 90,078.18-124,307.91-49,242.48

Finding the Fourth Proportional to 90,078.18, 124,307.91 and 49,242.48

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Solution

The fourth proportional to 90,078.18, 124,307.91 and 49,242.48 is: 67,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.18 : 124,307.91 = 49,242.48 : x
  2. Step 2: Convert to fraction form
    90,078.18/124,307.91 = 49,242.48/x
  3. Step 3: Cross multiply
    90,078.18x = 124,307.91 × 49,242.48
  4. Step 4: Simplify right side
    90,078.18x = 6,121,229,772.02
  5. Step 5: Solve for x
    x = 6,121,229,772.02/90,078.18
  6. Step 6: Final answer
    x = 67,954.64

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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.