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Finding the Fourth Proportional to 81,465.84, 112,401.77 and 49,174.94

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Solution

The fourth proportional to 81,465.84, 112,401.77 and 49,174.94 is: 67,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465.84 : 112,401.77 = 49,174.94 : x
  2. Step 2: Convert to fraction form
    81,465.84/112,401.77 = 49,174.94/x
  3. Step 3: Cross multiply
    81,465.84x = 112,401.77 × 49,174.94
  4. Step 4: Simplify right side
    81,465.84x = 5,527,350,330.77
  5. Step 5: Solve for x
    x = 5,527,350,330.77/81,465.84
  6. Step 6: Final answer
    x = 67,848.69

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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.