Home / 71,750.49-99,042.75-61,638.36

Finding the Fourth Proportional to 71,750.49, 99,042.75 and 61,638.36

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Solution

The fourth proportional to 71,750.49, 99,042.75 and 61,638.36 is: 85,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,750.49 : 99,042.75 = 61,638.36 : x
  2. Step 2: Convert to fraction form
    71,750.49/99,042.75 = 61,638.36/x
  3. Step 3: Cross multiply
    71,750.49x = 99,042.75 × 61,638.36
  4. Step 4: Simplify right side
    71,750.49x = 6,104,832,679.89
  5. Step 5: Solve for x
    x = 6,104,832,679.89/71,750.49
  6. Step 6: Final answer
    x = 85,084.19

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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.