Home / 78,590.07-117,886.32-43,751.16

Finding the Fourth Proportional to 78,590.07, 117,886.32 and 43,751.16

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Solution

The fourth proportional to 78,590.07, 117,886.32 and 43,751.16 is: 65,627.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,590.07 : 117,886.32 = 43,751.16 : x
  2. Step 2: Convert to fraction form
    78,590.07/117,886.32 = 43,751.16/x
  3. Step 3: Cross multiply
    78,590.07x = 117,886.32 × 43,751.16
  4. Step 4: Simplify right side
    78,590.07x = 5,157,663,248.13
  5. Step 5: Solve for x
    x = 5,157,663,248.13/78,590.07
  6. Step 6: Final answer
    x = 65,627.42

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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.