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Finding the Fourth Proportional to 69,358.74, 95,715.51 and 40,672.56

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Solution

The fourth proportional to 69,358.74, 95,715.51 and 40,672.56 is: 56,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,358.74 : 95,715.51 = 40,672.56 : x
  2. Step 2: Convert to fraction form
    69,358.74/95,715.51 = 40,672.56/x
  3. Step 3: Cross multiply
    69,358.74x = 95,715.51 × 40,672.56
  4. Step 4: Simplify right side
    69,358.74x = 3,892,994,870.81
  5. Step 5: Solve for x
    x = 3,892,994,870.81/69,358.74
  6. Step 6: Final answer
    x = 56,128.40

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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.