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Finding the Fourth Proportional to 70,177.36, 105,256.72 and 20,262.42

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Solution

The fourth proportional to 70,177.36, 105,256.72 and 20,262.42 is: 30,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,177.36 : 105,256.72 = 20,262.42 : x
  2. Step 2: Convert to fraction form
    70,177.36/105,256.72 = 20,262.42/x
  3. Step 3: Cross multiply
    70,177.36x = 105,256.72 × 20,262.42
  4. Step 4: Simplify right side
    70,177.36x = 2,132,755,868.46
  5. Step 5: Solve for x
    x = 2,132,755,868.46/70,177.36
  6. Step 6: Final answer
    x = 30,390.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.