Home / 85,983.31-118,643.70-49,186.63

Finding the Fourth Proportional to 85,983.31, 118,643.70 and 49,186.63

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Solution

The fourth proportional to 85,983.31, 118,643.70 and 49,186.63 is: 67,869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983.31 : 118,643.70 = 49,186.63 : x
  2. Step 2: Convert to fraction form
    85,983.31/118,643.70 = 49,186.63/x
  3. Step 3: Cross multiply
    85,983.31x = 118,643.70 × 49,186.63
  4. Step 4: Simplify right side
    85,983.31x = 5,835,683,773.73
  5. Step 5: Solve for x
    x = 5,835,683,773.73/85,983.31
  6. Step 6: Final answer
    x = 67,869.96

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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.