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Finding the Fourth Proportional to 70,504.48, 105,723.24 and 40,931.44

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Solution

The fourth proportional to 70,504.48, 105,723.24 and 40,931.44 is: 61,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,504.48 : 105,723.24 = 40,931.44 : x
  2. Step 2: Convert to fraction form
    70,504.48/105,723.24 = 40,931.44/x
  3. Step 3: Cross multiply
    70,504.48x = 105,723.24 × 40,931.44
  4. Step 4: Simplify right side
    70,504.48x = 4,327,404,454.67
  5. Step 5: Solve for x
    x = 4,327,404,454.67/70,504.48
  6. Step 6: Final answer
    x = 61,377.72

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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.