Home / 78,550.13-117,823.43-19,386.32

Finding the Fourth Proportional to 78,550.13, 117,823.43 and 19,386.32

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Solution

The fourth proportional to 78,550.13, 117,823.43 and 19,386.32 is: 29,079.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,550.13 : 117,823.43 = 19,386.32 : x
  2. Step 2: Convert to fraction form
    78,550.13/117,823.43 = 19,386.32/x
  3. Step 3: Cross multiply
    78,550.13x = 117,823.43 × 19,386.32
  4. Step 4: Simplify right side
    78,550.13x = 2,284,162,031.43
  5. Step 5: Solve for x
    x = 2,284,162,031.43/78,550.13
  6. Step 6: Final answer
    x = 29,079.04

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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.