Home / 71,946.80-99,281.92-40,113.80

Finding the Fourth Proportional to 71,946.80, 99,281.92 and 40,113.80

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Solution

The fourth proportional to 71,946.80, 99,281.92 and 40,113.80 is: 55,354.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,946.80 : 99,281.92 = 40,113.80 : x
  2. Step 2: Convert to fraction form
    71,946.80/99,281.92 = 40,113.80/x
  3. Step 3: Cross multiply
    71,946.80x = 99,281.92 × 40,113.80
  4. Step 4: Simplify right side
    71,946.80x = 3,982,575,082.50
  5. Step 5: Solve for x
    x = 3,982,575,082.50/71,946.80
  6. Step 6: Final answer
    x = 55,354.44

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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.