Home / 72,180.32-99,611.10-40,349.07

Finding the Fourth Proportional to 72,180.32, 99,611.10 and 40,349.07

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Solution

The fourth proportional to 72,180.32, 99,611.10 and 40,349.07 is: 55,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,180.32 : 99,611.10 = 40,349.07 : x
  2. Step 2: Convert to fraction form
    72,180.32/99,611.10 = 40,349.07/x
  3. Step 3: Cross multiply
    72,180.32x = 99,611.10 × 40,349.07
  4. Step 4: Simplify right side
    72,180.32x = 4,019,215,246.68
  5. Step 5: Solve for x
    x = 4,019,215,246.68/72,180.32
  6. Step 6: Final answer
    x = 55,682.98

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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.