Home / 78,861.31-118,274.28-22,688.89

Finding the Fourth Proportional to 78,861.31, 118,274.28 and 22,688.89

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Solution

The fourth proportional to 78,861.31, 118,274.28 and 22,688.89 is: 34,028.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,861.31 : 118,274.28 = 22,688.89 : x
  2. Step 2: Convert to fraction form
    78,861.31/118,274.28 = 22,688.89/x
  3. Step 3: Cross multiply
    78,861.31x = 118,274.28 × 22,688.89
  4. Step 4: Simplify right side
    78,861.31x = 2,683,511,747.98
  5. Step 5: Solve for x
    x = 2,683,511,747.98/78,861.31
  6. Step 6: Final answer
    x = 34,028.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.