Home / 71,729.05-98,985.81-39,897.96

Finding the Fourth Proportional to 71,729.05, 98,985.81 and 39,897.96

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Solution

The fourth proportional to 71,729.05, 98,985.81 and 39,897.96 is: 55,059.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,729.05 : 98,985.81 = 39,897.96 : x
  2. Step 2: Convert to fraction form
    71,729.05/98,985.81 = 39,897.96/x
  3. Step 3: Cross multiply
    71,729.05x = 98,985.81 × 39,897.96
  4. Step 4: Simplify right side
    71,729.05x = 3,949,331,887.95
  5. Step 5: Solve for x
    x = 3,949,331,887.95/71,729.05
  6. Step 6: Final answer
    x = 55,059.03

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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.