Home / 87,118.89-120,266.31-58,428.06

Finding the Fourth Proportional to 87,118.89, 120,266.31 and 58,428.06

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Solution

The fourth proportional to 87,118.89, 120,266.31 and 58,428.06 is: 80,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,118.89 : 120,266.31 = 58,428.06 : x
  2. Step 2: Convert to fraction form
    87,118.89/120,266.31 = 58,428.06/x
  3. Step 3: Cross multiply
    87,118.89x = 120,266.31 × 58,428.06
  4. Step 4: Simplify right side
    87,118.89x = 7,026,927,176.66
  5. Step 5: Solve for x
    x = 7,026,927,176.66/87,118.89
  6. Step 6: Final answer
    x = 80,659.05

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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.