Home / 78,869.40-118,304.10-49,344.90

Finding the Fourth Proportional to 78,869.40, 118,304.10 and 49,344.90

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Solution

The fourth proportional to 78,869.40, 118,304.10 and 49,344.90 is: 74,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.40 : 118,304.10 = 49,344.90 : x
  2. Step 2: Convert to fraction form
    78,869.40/118,304.10 = 49,344.90/x
  3. Step 3: Cross multiply
    78,869.40x = 118,304.10 × 49,344.90
  4. Step 4: Simplify right side
    78,869.40x = 5,837,703,984.09
  5. Step 5: Solve for x
    x = 5,837,703,984.09/78,869.40
  6. Step 6: Final answer
    x = 74,017.35

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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.