Home / 61,385.32-84,630.18-40,128.04

Finding the Fourth Proportional to 61,385.32, 84,630.18 and 40,128.04

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Solution

The fourth proportional to 61,385.32, 84,630.18 and 40,128.04 is: 55,323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,385.32 : 84,630.18 = 40,128.04 : x
  2. Step 2: Convert to fraction form
    61,385.32/84,630.18 = 40,128.04/x
  3. Step 3: Cross multiply
    61,385.32x = 84,630.18 × 40,128.04
  4. Step 4: Simplify right side
    61,385.32x = 3,396,043,248.25
  5. Step 5: Solve for x
    x = 3,396,043,248.25/61,385.32
  6. Step 6: Final answer
    x = 55,323.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.