Home / 79,728.16-119,370.76-40,165.32

Finding the Fourth Proportional to 79,728.16, 119,370.76 and 40,165.32

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Solution

The fourth proportional to 79,728.16, 119,370.76 and 40,165.32 is: 60,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,728.16 : 119,370.76 = 40,165.32 : x
  2. Step 2: Convert to fraction form
    79,728.16/119,370.76 = 40,165.32/x
  3. Step 3: Cross multiply
    79,728.16x = 119,370.76 × 40,165.32
  4. Step 4: Simplify right side
    79,728.16x = 4,794,564,774.04
  5. Step 5: Solve for x
    x = 4,794,564,774.04/79,728.16
  6. Step 6: Final answer
    x = 60,136.40

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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.