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Finding the Fourth Proportional to 81,706.62, 112,763.30 and 54,904.94

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Solution

The fourth proportional to 81,706.62, 112,763.30 and 54,904.94 is: 75,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,706.62 : 112,763.30 = 54,904.94 : x
  2. Step 2: Convert to fraction form
    81,706.62/112,763.30 = 54,904.94/x
  3. Step 3: Cross multiply
    81,706.62x = 112,763.30 × 54,904.94
  4. Step 4: Simplify right side
    81,706.62x = 6,191,262,220.70
  5. Step 5: Solve for x
    x = 6,191,262,220.70/81,706.62
  6. Step 6: Final answer
    x = 75,774.30

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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.