Home / 72,206.53-99,645.35-40,375.45

Finding the Fourth Proportional to 72,206.53, 99,645.35 and 40,375.45

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Solution

The fourth proportional to 72,206.53, 99,645.35 and 40,375.45 is: 55,718.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.53 : 99,645.35 = 40,375.45 : x
  2. Step 2: Convert to fraction form
    72,206.53/99,645.35 = 40,375.45/x
  3. Step 3: Cross multiply
    72,206.53x = 99,645.35 × 40,375.45
  4. Step 4: Simplify right side
    72,206.53x = 4,023,225,846.66
  5. Step 5: Solve for x
    x = 4,023,225,846.66/72,206.53
  6. Step 6: Final answer
    x = 55,718.31

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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.