Home / 72,731.34-100,373.22-40,902.12

Finding the Fourth Proportional to 72,731.34, 100,373.22 and 40,902.12

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Solution

The fourth proportional to 72,731.34, 100,373.22 and 40,902.12 is: 56,447.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,731.34 : 100,373.22 = 40,902.12 : x
  2. Step 2: Convert to fraction form
    72,731.34/100,373.22 = 40,902.12/x
  3. Step 3: Cross multiply
    72,731.34x = 100,373.22 × 40,902.12
  4. Step 4: Simplify right side
    72,731.34x = 4,105,477,489.23
  5. Step 5: Solve for x
    x = 4,105,477,489.23/72,731.34
  6. Step 6: Final answer
    x = 56,447.16

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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.