Home / 72,064.68-99,437.40-40,228.44

Finding the Fourth Proportional to 72,064.68, 99,437.40 and 40,228.44

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Solution

The fourth proportional to 72,064.68, 99,437.40 and 40,228.44 is: 55,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,064.68 : 99,437.40 = 40,228.44 : x
  2. Step 2: Convert to fraction form
    72,064.68/99,437.40 = 40,228.44/x
  3. Step 3: Cross multiply
    72,064.68x = 99,437.40 × 40,228.44
  4. Step 4: Simplify right side
    72,064.68x = 4,000,211,479.66
  5. Step 5: Solve for x
    x = 4,000,211,479.66/72,064.68
  6. Step 6: Final answer
    x = 55,508.63

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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.