Home / 90,389.76-124,695.68-56,874.24

Finding the Fourth Proportional to 90,389.76, 124,695.68 and 56,874.24

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Solution

The fourth proportional to 90,389.76, 124,695.68 and 56,874.24 is: 78,459.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.76 : 124,695.68 = 56,874.24 : x
  2. Step 2: Convert to fraction form
    90,389.76/124,695.68 = 56,874.24/x
  3. Step 3: Cross multiply
    90,389.76x = 124,695.68 × 56,874.24
  4. Step 4: Simplify right side
    90,389.76x = 7,091,972,031.28
  5. Step 5: Solve for x
    x = 7,091,972,031.28/90,389.76
  6. Step 6: Final answer
    x = 78,459.91

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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.