Home / 78,982.59-118,473.89-31,619.01

Finding the Fourth Proportional to 78,982.59, 118,473.89 and 31,619.01

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Solution

The fourth proportional to 78,982.59, 118,473.89 and 31,619.01 is: 47,428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982.59 : 118,473.89 = 31,619.01 : x
  2. Step 2: Convert to fraction form
    78,982.59/118,473.89 = 31,619.01/x
  3. Step 3: Cross multiply
    78,982.59x = 118,473.89 × 31,619.01
  4. Step 4: Simplify right side
    78,982.59x = 3,746,026,910.27
  5. Step 5: Solve for x
    x = 3,746,026,910.27/78,982.59
  6. Step 6: Final answer
    x = 47,428.51

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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.