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Finding the Fourth Proportional to 77,222.46, 115,644.96 and 69,742.92

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Solution

The fourth proportional to 77,222.46, 115,644.96 and 69,742.92 is: 104,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,222.46 : 115,644.96 = 69,742.92 : x
  2. Step 2: Convert to fraction form
    77,222.46/115,644.96 = 69,742.92/x
  3. Step 3: Cross multiply
    77,222.46x = 115,644.96 × 69,742.92
  4. Step 4: Simplify right side
    77,222.46x = 8,065,417,193.68
  5. Step 5: Solve for x
    x = 8,065,417,193.68/77,222.46
  6. Step 6: Final answer
    x = 104,443.93

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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.