Home / 71,003.74-97,985.55-39,172.66

Finding the Fourth Proportional to 71,003.74, 97,985.55 and 39,172.66

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Solution

The fourth proportional to 71,003.74, 97,985.55 and 39,172.66 is: 54,058.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,003.74 : 97,985.55 = 39,172.66 : x
  2. Step 2: Convert to fraction form
    71,003.74/97,985.55 = 39,172.66/x
  3. Step 3: Cross multiply
    71,003.74x = 97,985.55 × 39,172.66
  4. Step 4: Simplify right side
    71,003.74x = 3,838,354,635.06
  5. Step 5: Solve for x
    x = 3,838,354,635.06/71,003.74
  6. Step 6: Final answer
    x = 54,058.49

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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.