Home / 90,031.11-124,236.54-49,744.46

Finding the Fourth Proportional to 90,031.11, 124,236.54 and 49,744.46

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Solution

The fourth proportional to 90,031.11, 124,236.54 and 49,744.46 is: 68,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.11 : 124,236.54 = 49,744.46 : x
  2. Step 2: Convert to fraction form
    90,031.11/124,236.54 = 49,744.46/x
  3. Step 3: Cross multiply
    90,031.11x = 124,236.54 × 49,744.46
  4. Step 4: Simplify right side
    90,031.11x = 6,180,078,973.39
  5. Step 5: Solve for x
    x = 6,180,078,973.39/90,031.11
  6. Step 6: Final answer
    x = 68,643.82

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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.