Home / 78,971.28-118,505.28-41,558.16

Finding the Fourth Proportional to 78,971.28, 118,505.28 and 41,558.16

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Solution

The fourth proportional to 78,971.28, 118,505.28 and 41,558.16 is: 62,362.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,971.28 : 118,505.28 = 41,558.16 : x
  2. Step 2: Convert to fraction form
    78,971.28/118,505.28 = 41,558.16/x
  3. Step 3: Cross multiply
    78,971.28x = 118,505.28 × 41,558.16
  4. Step 4: Simplify right side
    78,971.28x = 4,924,861,387.08
  5. Step 5: Solve for x
    x = 4,924,861,387.08/78,971.28
  6. Step 6: Final answer
    x = 62,362.69

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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.