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Finding the Fourth Proportional to 64,123.90, 96,185.85 and 40,504.30

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Solution

The fourth proportional to 64,123.90, 96,185.85 and 40,504.30 is: 60,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,123.90 : 96,185.85 = 40,504.30 : x
  2. Step 2: Convert to fraction form
    64,123.90/96,185.85 = 40,504.30/x
  3. Step 3: Cross multiply
    64,123.90x = 96,185.85 × 40,504.30
  4. Step 4: Simplify right side
    64,123.90x = 3,895,940,524.16
  5. Step 5: Solve for x
    x = 3,895,940,524.16/64,123.90
  6. Step 6: Final answer
    x = 60,756.45

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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.