Home / 78,590.15-108,247.81-60,406.10

Finding the Fourth Proportional to 78,590.15, 108,247.81 and 60,406.10

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Solution

The fourth proportional to 78,590.15, 108,247.81 and 60,406.10 is: 83,201.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,590.15 : 108,247.81 = 60,406.10 : x
  2. Step 2: Convert to fraction form
    78,590.15/108,247.81 = 60,406.10/x
  3. Step 3: Cross multiply
    78,590.15x = 108,247.81 × 60,406.10
  4. Step 4: Simplify right side
    78,590.15x = 6,538,827,531.63
  5. Step 5: Solve for x
    x = 6,538,827,531.63/78,590.15
  6. Step 6: Final answer
    x = 83,201.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.