Home / 72,557.04-100,121-40,729.44

Finding the Fourth Proportional to 72,557.04, 100,121 and 40,729.44

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Solution

The fourth proportional to 72,557.04, 100,121 and 40,729.44 is: 56,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557.04 : 100,121 = 40,729.44 : x
  2. Step 2: Convert to fraction form
    72,557.04/100,121 = 40,729.44/x
  3. Step 3: Cross multiply
    72,557.04x = 100,121 × 40,729.44
  4. Step 4: Simplify right side
    72,557.04x = 4,077,872,262.24
  5. Step 5: Solve for x
    x = 4,077,872,262.24/72,557.04
  6. Step 6: Final answer
    x = 56,202.30

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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.