Home / 78,004.20-117,006.30-64,882.20

Finding the Fourth Proportional to 78,004.20, 117,006.30 and 64,882.20

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Solution

The fourth proportional to 78,004.20, 117,006.30 and 64,882.20 is: 97,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.20 : 117,006.30 = 64,882.20 : x
  2. Step 2: Convert to fraction form
    78,004.20/117,006.30 = 64,882.20/x
  3. Step 3: Cross multiply
    78,004.20x = 117,006.30 × 64,882.20
  4. Step 4: Simplify right side
    78,004.20x = 7,591,626,157.86
  5. Step 5: Solve for x
    x = 7,591,626,157.86/78,004.20
  6. Step 6: Final answer
    x = 97,323.30

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1.5x scale

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.