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Finding the Fourth Proportional to 72,373.44, 99,874.80 and 40,542.60

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Solution

The fourth proportional to 72,373.44, 99,874.80 and 40,542.60 is: 55,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,373.44 : 99,874.80 = 40,542.60 : x
  2. Step 2: Convert to fraction form
    72,373.44/99,874.80 = 40,542.60/x
  3. Step 3: Cross multiply
    72,373.44x = 99,874.80 × 40,542.60
  4. Step 4: Simplify right side
    72,373.44x = 4,049,184,066.48
  5. Step 5: Solve for x
    x = 4,049,184,066.48/72,373.44
  6. Step 6: Final answer
    x = 55,948.48

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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.