Home / 78,006.41-116,987.29-25,420.49

Finding the Fourth Proportional to 78,006.41, 116,987.29 and 25,420.49

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Solution

The fourth proportional to 78,006.41, 116,987.29 and 25,420.49 is: 38,123.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,006.41 : 116,987.29 = 25,420.49 : x
  2. Step 2: Convert to fraction form
    78,006.41/116,987.29 = 25,420.49/x
  3. Step 3: Cross multiply
    78,006.41x = 116,987.29 × 25,420.49
  4. Step 4: Simplify right side
    78,006.41x = 2,973,874,235.57
  5. Step 5: Solve for x
    x = 2,973,874,235.57/78,006.41
  6. Step 6: Final answer
    x = 38,123.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.