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Finding the Fourth Proportional to 69,143.68, 95,412.12 and 38,514.42

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Solution

The fourth proportional to 69,143.68, 95,412.12 and 38,514.42 is: 53,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,143.68 : 95,412.12 = 38,514.42 : x
  2. Step 2: Convert to fraction form
    69,143.68/95,412.12 = 38,514.42/x
  3. Step 3: Cross multiply
    69,143.68x = 95,412.12 × 38,514.42
  4. Step 4: Simplify right side
    69,143.68x = 3,674,742,462.77
  5. Step 5: Solve for x
    x = 3,674,742,462.77/69,143.68
  6. Step 6: Final answer
    x = 53,146.47

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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.