Home / 78,585.06-117,878.81-43,746.15

Finding the Fourth Proportional to 78,585.06, 117,878.81 and 43,746.15

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Solution

The fourth proportional to 78,585.06, 117,878.81 and 43,746.15 is: 65,619.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,585.06 : 117,878.81 = 43,746.15 : x
  2. Step 2: Convert to fraction form
    78,585.06/117,878.81 = 43,746.15/x
  3. Step 3: Cross multiply
    78,585.06x = 117,878.81 × 43,746.15
  4. Step 4: Simplify right side
    78,585.06x = 5,156,744,104.08
  5. Step 5: Solve for x
    x = 5,156,744,104.08/78,585.06
  6. Step 6: Final answer
    x = 65,619.90

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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.