Home / 87,111.90-120,207.12-48,866.10

Finding the Fourth Proportional to 87,111.90, 120,207.12 and 48,866.10

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Solution

The fourth proportional to 87,111.90, 120,207.12 and 48,866.10 is: 67,431.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,111.90 : 120,207.12 = 48,866.10 : x
  2. Step 2: Convert to fraction form
    87,111.90/120,207.12 = 48,866.10/x
  3. Step 3: Cross multiply
    87,111.90x = 120,207.12 × 48,866.10
  4. Step 4: Simplify right side
    87,111.90x = 5,874,053,146.63
  5. Step 5: Solve for x
    x = 5,874,053,146.63/87,111.90
  6. Step 6: Final answer
    x = 67,431.12

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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.