Home / 90,012.08-124,161.72-63,115.76

Finding the Fourth Proportional to 90,012.08, 124,161.72 and 63,115.76

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Solution

The fourth proportional to 90,012.08, 124,161.72 and 63,115.76 is: 87,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,012.08 : 124,161.72 = 63,115.76 : x
  2. Step 2: Convert to fraction form
    90,012.08/124,161.72 = 63,115.76/x
  3. Step 3: Cross multiply
    90,012.08x = 124,161.72 × 63,115.76
  4. Step 4: Simplify right side
    90,012.08x = 7,836,561,320.71
  5. Step 5: Solve for x
    x = 7,836,561,320.71/90,012.08
  6. Step 6: Final answer
    x = 87,061.22

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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.