Home / 78,938.54-108,897.21-57,394.90

Finding the Fourth Proportional to 78,938.54, 108,897.21 and 57,394.90

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Solution

The fourth proportional to 78,938.54, 108,897.21 and 57,394.90 is: 79,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.54 : 108,897.21 = 57,394.90 : x
  2. Step 2: Convert to fraction form
    78,938.54/108,897.21 = 57,394.90/x
  3. Step 3: Cross multiply
    78,938.54x = 108,897.21 × 57,394.90
  4. Step 4: Simplify right side
    78,938.54x = 6,250,144,478.23
  5. Step 5: Solve for x
    x = 6,250,144,478.23/78,938.54
  6. Step 6: Final answer
    x = 79,177.35

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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.