Home / 72,181.01-99,612.88-40,349.90

Finding the Fourth Proportional to 72,181.01, 99,612.88 and 40,349.90

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Solution

The fourth proportional to 72,181.01, 99,612.88 and 40,349.90 is: 55,684.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181.01 : 99,612.88 = 40,349.90 : x
  2. Step 2: Convert to fraction form
    72,181.01/99,612.88 = 40,349.90/x
  3. Step 3: Cross multiply
    72,181.01x = 99,612.88 × 40,349.90
  4. Step 4: Simplify right side
    72,181.01x = 4,019,369,147.77
  5. Step 5: Solve for x
    x = 4,019,369,147.77/72,181.01
  6. Step 6: Final answer
    x = 55,684.58

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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.