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Finding the Fourth Proportional to 69,144.86, 95,421.57 and 38,931.19

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Solution

The fourth proportional to 69,144.86, 95,421.57 and 38,931.19 is: 53,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,144.86 : 95,421.57 = 38,931.19 : x
  2. Step 2: Convert to fraction form
    69,144.86/95,421.57 = 38,931.19/x
  3. Step 3: Cross multiply
    69,144.86x = 95,421.57 × 38,931.19
  4. Step 4: Simplify right side
    69,144.86x = 3,714,875,271.77
  5. Step 5: Solve for x
    x = 3,714,875,271.77/69,144.86
  6. Step 6: Final answer
    x = 53,725.98

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Half scale
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Double scale
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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.