Home / 78,427.54-108,230.66-42,617.55

Finding the Fourth Proportional to 78,427.54, 108,230.66 and 42,617.55

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Solution

The fourth proportional to 78,427.54, 108,230.66 and 42,617.55 is: 58,812.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.54 : 108,230.66 = 42,617.55 : x
  2. Step 2: Convert to fraction form
    78,427.54/108,230.66 = 42,617.55/x
  3. Step 3: Cross multiply
    78,427.54x = 108,230.66 × 42,617.55
  4. Step 4: Simplify right side
    78,427.54x = 4,612,525,564.08
  5. Step 5: Solve for x
    x = 4,612,525,564.08/78,427.54
  6. Step 6: Final answer
    x = 58,812.57

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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.