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Finding the Fourth Proportional to 66,158.91, 91,298.91 and 38,950.81

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Solution

The fourth proportional to 66,158.91, 91,298.91 and 38,950.81 is: 53,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,158.91 : 91,298.91 = 38,950.81 : x
  2. Step 2: Convert to fraction form
    66,158.91/91,298.91 = 38,950.81/x
  3. Step 3: Cross multiply
    66,158.91x = 91,298.91 × 38,950.81
  4. Step 4: Simplify right side
    66,158.91x = 3,556,165,845.37
  5. Step 5: Solve for x
    x = 3,556,165,845.37/66,158.91
  6. Step 6: Final answer
    x = 53,751.88

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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.