Home / 66,585.13-91,890.18-38,290.81

Finding the Fourth Proportional to 66,585.13, 91,890.18 and 38,290.81

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Solution

The fourth proportional to 66,585.13, 91,890.18 and 38,290.81 is: 52,842.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585.13 : 91,890.18 = 38,290.81 : x
  2. Step 2: Convert to fraction form
    66,585.13/91,890.18 = 38,290.81/x
  3. Step 3: Cross multiply
    66,585.13x = 91,890.18 × 38,290.81
  4. Step 4: Simplify right side
    66,585.13x = 3,518,549,423.25
  5. Step 5: Solve for x
    x = 3,518,549,423.25/66,585.13
  6. Step 6: Final answer
    x = 52,842.87

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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.