Home / 84,402.09-116,419.95-54,139.46

Finding the Fourth Proportional to 84,402.09, 116,419.95 and 54,139.46

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Solution

The fourth proportional to 84,402.09, 116,419.95 and 54,139.46 is: 74,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,402.09 : 116,419.95 = 54,139.46 : x
  2. Step 2: Convert to fraction form
    84,402.09/116,419.95 = 54,139.46/x
  3. Step 3: Cross multiply
    84,402.09x = 116,419.95 × 54,139.46
  4. Step 4: Simplify right side
    84,402.09x = 6,302,912,644.13
  5. Step 5: Solve for x
    x = 6,302,912,644.13/84,402.09
  6. Step 6: Final answer
    x = 74,677.21

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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.