Home / 70,890.24-97,821.78-40,678.04

Finding the Fourth Proportional to 70,890.24, 97,821.78 and 40,678.04

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Solution

The fourth proportional to 70,890.24, 97,821.78 and 40,678.04 is: 56,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.24 : 97,821.78 = 40,678.04 : x
  2. Step 2: Convert to fraction form
    70,890.24/97,821.78 = 40,678.04/x
  3. Step 3: Cross multiply
    70,890.24x = 97,821.78 × 40,678.04
  4. Step 4: Simplify right side
    70,890.24x = 3,979,198,279.71
  5. Step 5: Solve for x
    x = 3,979,198,279.71/70,890.24
  6. Step 6: Final answer
    x = 56,131.82

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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.