Home / 72,338.91-99,824.77-40,071.65

Finding the Fourth Proportional to 72,338.91, 99,824.77 and 40,071.65

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Solution

The fourth proportional to 72,338.91, 99,824.77 and 40,071.65 is: 55,297.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,338.91 : 99,824.77 = 40,071.65 : x
  2. Step 2: Convert to fraction form
    72,338.91/99,824.77 = 40,071.65/x
  3. Step 3: Cross multiply
    72,338.91x = 99,824.77 × 40,071.65
  4. Step 4: Simplify right side
    72,338.91x = 4,000,142,795.74
  5. Step 5: Solve for x
    x = 4,000,142,795.74/72,338.91
  6. Step 6: Final answer
    x = 55,297.25

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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.