Home / 78,178.92-117,182.16-36,047.04

Finding the Fourth Proportional to 78,178.92, 117,182.16 and 36,047.04

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Solution

The fourth proportional to 78,178.92, 117,182.16 and 36,047.04 is: 54,030.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178.92 : 117,182.16 = 36,047.04 : x
  2. Step 2: Convert to fraction form
    78,178.92/117,182.16 = 36,047.04/x
  3. Step 3: Cross multiply
    78,178.92x = 117,182.16 × 36,047.04
  4. Step 4: Simplify right side
    78,178.92x = 4,224,070,008.81
  5. Step 5: Solve for x
    x = 4,224,070,008.81/78,178.92
  6. Step 6: Final answer
    x = 54,030.81

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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.