Home / 52,721.40-78,966.90-40,942.20

Finding the Fourth Proportional to 52,721.40, 78,966.90 and 40,942.20

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Solution

The fourth proportional to 52,721.40, 78,966.90 and 40,942.20 is: 61,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,721.40 : 78,966.90 = 40,942.20 : x
  2. Step 2: Convert to fraction form
    52,721.40/78,966.90 = 40,942.20/x
  3. Step 3: Cross multiply
    52,721.40x = 78,966.90 × 40,942.20
  4. Step 4: Simplify right side
    52,721.40x = 3,233,078,613.18
  5. Step 5: Solve for x
    x = 3,233,078,613.18/52,721.40
  6. Step 6: Final answer
    x = 61,323.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.