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Finding the Fourth Proportional to 81,825.76, 112,933.40 and 47,365.50

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Solution

The fourth proportional to 81,825.76, 112,933.40 and 47,365.50 is: 65,372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,825.76 : 112,933.40 = 47,365.50 : x
  2. Step 2: Convert to fraction form
    81,825.76/112,933.40 = 47,365.50/x
  3. Step 3: Cross multiply
    81,825.76x = 112,933.40 × 47,365.50
  4. Step 4: Simplify right side
    81,825.76x = 5,349,146,957.70
  5. Step 5: Solve for x
    x = 5,349,146,957.70/81,825.76
  6. Step 6: Final answer
    x = 65,372.41

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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.