Home / 72,529.65-100,100.88-40,700.43

Finding the Fourth Proportional to 72,529.65, 100,100.88 and 40,700.43

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Solution

The fourth proportional to 72,529.65, 100,100.88 and 40,700.43 is: 56,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,529.65 : 100,100.88 = 40,700.43 : x
  2. Step 2: Convert to fraction form
    72,529.65/100,100.88 = 40,700.43/x
  3. Step 3: Cross multiply
    72,529.65x = 100,100.88 × 40,700.43
  4. Step 4: Simplify right side
    72,529.65x = 4,074,148,859.38
  5. Step 5: Solve for x
    x = 4,074,148,859.38/72,529.65
  6. Step 6: Final answer
    x = 56,172.18

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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.