Home / 65,486.04-90,381.57-38,635.11

Finding the Fourth Proportional to 65,486.04, 90,381.57 and 38,635.11

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Solution

The fourth proportional to 65,486.04, 90,381.57 and 38,635.11 is: 53,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,486.04 : 90,381.57 = 38,635.11 : x
  2. Step 2: Convert to fraction form
    65,486.04/90,381.57 = 38,635.11/x
  3. Step 3: Cross multiply
    65,486.04x = 90,381.57 × 38,635.11
  4. Step 4: Simplify right side
    65,486.04x = 3,491,901,898.92
  5. Step 5: Solve for x
    x = 3,491,901,898.92/65,486.04
  6. Step 6: Final answer
    x = 53,322.84

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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.