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Finding the Fourth Proportional to 70,507.40, 105,727.07 and 40,932.68

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Solution

The fourth proportional to 70,507.40, 105,727.07 and 40,932.68 is: 61,379.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,507.40 : 105,727.07 = 40,932.68 : x
  2. Step 2: Convert to fraction form
    70,507.40/105,727.07 = 40,932.68/x
  3. Step 3: Cross multiply
    70,507.40x = 105,727.07 × 40,932.68
  4. Step 4: Simplify right side
    70,507.40x = 4,327,691,897.34
  5. Step 5: Solve for x
    x = 4,327,691,897.34/70,507.40
  6. Step 6: Final answer
    x = 61,379.26

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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.