Home / 85,607.04-118,131.30-47,874

Finding the Fourth Proportional to 85,607.04, 118,131.30 and 47,874

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Solution

The fourth proportional to 85,607.04, 118,131.30 and 47,874 is: 66,062.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,607.04 : 118,131.30 = 47,874 : x
  2. Step 2: Convert to fraction form
    85,607.04/118,131.30 = 47,874/x
  3. Step 3: Cross multiply
    85,607.04x = 118,131.30 × 47,874
  4. Step 4: Simplify right side
    85,607.04x = 5,655,417,856.20
  5. Step 5: Solve for x
    x = 5,655,417,856.20/85,607.04
  6. Step 6: Final answer
    x = 66,062.53

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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.