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Finding the Fourth Proportional to 64,862.92, 89,524.74 and 40,974.40

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Solution

The fourth proportional to 64,862.92, 89,524.74 and 40,974.40 is: 56,553.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,862.92 : 89,524.74 = 40,974.40 : x
  2. Step 2: Convert to fraction form
    64,862.92/89,524.74 = 40,974.40/x
  3. Step 3: Cross multiply
    64,862.92x = 89,524.74 × 40,974.40
  4. Step 4: Simplify right side
    64,862.92x = 3,668,222,506.66
  5. Step 5: Solve for x
    x = 3,668,222,506.66/64,862.92
  6. Step 6: Final answer
    x = 56,553.46

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1.5x scale

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.