Home / 64,517.04-89,043.16-39,381.12

Finding the Fourth Proportional to 64,517.04, 89,043.16 and 39,381.12

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Solution

The fourth proportional to 64,517.04, 89,043.16 and 39,381.12 is: 54,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,517.04 : 89,043.16 = 39,381.12 : x
  2. Step 2: Convert to fraction form
    64,517.04/89,043.16 = 39,381.12/x
  3. Step 3: Cross multiply
    64,517.04x = 89,043.16 × 39,381.12
  4. Step 4: Simplify right side
    64,517.04x = 3,506,619,369.14
  5. Step 5: Solve for x
    x = 3,506,619,369.14/64,517.04
  6. Step 6: Final answer
    x = 54,351.83

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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.