Home / 40,530.04-55,970.10-38,321.20

Finding the Fourth Proportional to 40,530.04, 55,970.10 and 38,321.20

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Solution

The fourth proportional to 40,530.04, 55,970.10 and 38,321.20 is: 52,919.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,530.04 : 55,970.10 = 38,321.20 : x
  2. Step 2: Convert to fraction form
    40,530.04/55,970.10 = 38,321.20/x
  3. Step 3: Cross multiply
    40,530.04x = 55,970.10 × 38,321.20
  4. Step 4: Simplify right side
    40,530.04x = 2,144,841,396.12
  5. Step 5: Solve for x
    x = 2,144,841,396.12/40,530.04
  6. Step 6: Final answer
    x = 52,919.79

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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.