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Finding the Fourth Proportional to 81,045.68, 111,894.40 and 55,594.68

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Solution

The fourth proportional to 81,045.68, 111,894.40 and 55,594.68 is: 76,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.68 : 111,894.40 = 55,594.68 : x
  2. Step 2: Convert to fraction form
    81,045.68/111,894.40 = 55,594.68/x
  3. Step 3: Cross multiply
    81,045.68x = 111,894.40 × 55,594.68
  4. Step 4: Simplify right side
    81,045.68x = 6,220,733,361.79
  5. Step 5: Solve for x
    x = 6,220,733,361.79/81,045.68
  6. Step 6: Final answer
    x = 76,755.89

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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.