Home / 78,825.90-118,348.20-49,301.40

Finding the Fourth Proportional to 78,825.90, 118,348.20 and 49,301.40

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Solution

The fourth proportional to 78,825.90, 118,348.20 and 49,301.40 is: 74,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.90 : 118,348.20 = 49,301.40 : x
  2. Step 2: Convert to fraction form
    78,825.90/118,348.20 = 49,301.40/x
  3. Step 3: Cross multiply
    78,825.90x = 118,348.20 × 49,301.40
  4. Step 4: Simplify right side
    78,825.90x = 5,834,731,947.48
  5. Step 5: Solve for x
    x = 5,834,731,947.48/78,825.90
  6. Step 6: Final answer
    x = 74,020.49

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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.