Home / 72,045.22-99,419.13-40,213.42

Finding the Fourth Proportional to 72,045.22, 99,419.13 and 40,213.42

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Solution

The fourth proportional to 72,045.22, 99,419.13 and 40,213.42 is: 55,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.22 : 99,419.13 = 40,213.42 : x
  2. Step 2: Convert to fraction form
    72,045.22/99,419.13 = 40,213.42/x
  3. Step 3: Cross multiply
    72,045.22x = 99,419.13 × 40,213.42
  4. Step 4: Simplify right side
    72,045.22x = 3,997,983,230.72
  5. Step 5: Solve for x
    x = 3,997,983,230.72/72,045.22
  6. Step 6: Final answer
    x = 55,492.69

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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.