Home / 64,279.35-88,694.94-40,389.21

Finding the Fourth Proportional to 64,279.35, 88,694.94 and 40,389.21

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Solution

The fourth proportional to 64,279.35, 88,694.94 and 40,389.21 is: 55,730.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,279.35 : 88,694.94 = 40,389.21 : x
  2. Step 2: Convert to fraction form
    64,279.35/88,694.94 = 40,389.21/x
  3. Step 3: Cross multiply
    64,279.35x = 88,694.94 × 40,389.21
  4. Step 4: Simplify right side
    64,279.35x = 3,582,318,557.60
  5. Step 5: Solve for x
    x = 3,582,318,557.60/64,279.35
  6. Step 6: Final answer
    x = 55,730.47

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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.