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Finding the Fourth Proportional to 40,689.45, 60,939.41 and 39,568.34

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Solution

The fourth proportional to 40,689.45, 60,939.41 and 39,568.34 is: 59,260.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,689.45 : 60,939.41 = 39,568.34 : x
  2. Step 2: Convert to fraction form
    40,689.45/60,939.41 = 39,568.34/x
  3. Step 3: Cross multiply
    40,689.45x = 60,939.41 × 39,568.34
  4. Step 4: Simplify right side
    40,689.45x = 2,411,271,248.79
  5. Step 5: Solve for x
    x = 2,411,271,248.79/40,689.45
  6. Step 6: Final answer
    x = 59,260.35

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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.