Home / 78,884.20-118,412.70-49,335.40

Finding the Fourth Proportional to 78,884.20, 118,412.70 and 49,335.40

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Solution

The fourth proportional to 78,884.20, 118,412.70 and 49,335.40 is: 74,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,884.20 : 118,412.70 = 49,335.40 : x
  2. Step 2: Convert to fraction form
    78,884.20/118,412.70 = 49,335.40/x
  3. Step 3: Cross multiply
    78,884.20x = 118,412.70 × 49,335.40
  4. Step 4: Simplify right side
    78,884.20x = 5,841,937,919.58
  5. Step 5: Solve for x
    x = 5,841,937,919.58/78,884.20
  6. Step 6: Final answer
    x = 74,057.14

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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.