Home / 72,005.10-108,007.65-40,512.30

Finding the Fourth Proportional to 72,005.10, 108,007.65 and 40,512.30

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Solution

The fourth proportional to 72,005.10, 108,007.65 and 40,512.30 is: 60,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,005.10 : 108,007.65 = 40,512.30 : x
  2. Step 2: Convert to fraction form
    72,005.10/108,007.65 = 40,512.30/x
  3. Step 3: Cross multiply
    72,005.10x = 108,007.65 × 40,512.30
  4. Step 4: Simplify right side
    72,005.10x = 4,375,638,319.10
  5. Step 5: Solve for x
    x = 4,375,638,319.10/72,005.10
  6. Step 6: Final answer
    x = 60,768.45

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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.