Home / 87,443.26-120,678.30-53,458.18

Finding the Fourth Proportional to 87,443.26, 120,678.30 and 53,458.18

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Solution

The fourth proportional to 87,443.26, 120,678.30 and 53,458.18 is: 73,776.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,443.26 : 120,678.30 = 53,458.18 : x
  2. Step 2: Convert to fraction form
    87,443.26/120,678.30 = 53,458.18/x
  3. Step 3: Cross multiply
    87,443.26x = 120,678.30 × 53,458.18
  4. Step 4: Simplify right side
    87,443.26x = 6,451,242,283.49
  5. Step 5: Solve for x
    x = 6,451,242,283.49/87,443.26
  6. Step 6: Final answer
    x = 73,776.32

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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.