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Finding the Fourth Proportional to 40,690.45, 60,940.90 and 39,569.34

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Solution

The fourth proportional to 40,690.45, 60,940.90 and 39,569.34 is: 59,261.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,690.45 : 60,940.90 = 39,569.34 : x
  2. Step 2: Convert to fraction form
    40,690.45/60,940.90 = 39,569.34/x
  3. Step 3: Cross multiply
    40,690.45x = 60,940.90 × 39,569.34
  4. Step 4: Simplify right side
    40,690.45x = 2,411,391,192.01
  5. Step 5: Solve for x
    x = 2,411,391,192.01/40,690.45
  6. Step 6: Final answer
    x = 59,261.85

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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.