Home / 72,170.13-99,597.87-40,339.02

Finding the Fourth Proportional to 72,170.13, 99,597.87 and 40,339.02

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Solution

The fourth proportional to 72,170.13, 99,597.87 and 40,339.02 is: 55,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.13 : 99,597.87 = 40,339.02 : x
  2. Step 2: Convert to fraction form
    72,170.13/99,597.87 = 40,339.02/x
  3. Step 3: Cross multiply
    72,170.13x = 99,597.87 × 40,339.02
  4. Step 4: Simplify right side
    72,170.13x = 4,017,680,469.89
  5. Step 5: Solve for x
    x = 4,017,680,469.89/72,170.13
  6. Step 6: Final answer
    x = 55,669.58

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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.