Home / 72,180.22-99,608.37-40,348.90

Finding the Fourth Proportional to 72,180.22, 99,608.37 and 40,348.90

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Solution

The fourth proportional to 72,180.22, 99,608.37 and 40,348.90 is: 55,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,180.22 : 99,608.37 = 40,348.90 : x
  2. Step 2: Convert to fraction form
    72,180.22/99,608.37 = 40,348.90/x
  3. Step 3: Cross multiply
    72,180.22x = 99,608.37 × 40,348.90
  4. Step 4: Simplify right side
    72,180.22x = 4,019,088,160.29
  5. Step 5: Solve for x
    x = 4,019,088,160.29/72,180.22
  6. Step 6: Final answer
    x = 55,681.30

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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.