Home / 81,839.55-112,921.64-47,841.46

Finding the Fourth Proportional to 81,839.55, 112,921.64 and 47,841.46

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Solution

The fourth proportional to 81,839.55, 112,921.64 and 47,841.46 is: 66,011.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.55 : 112,921.64 = 47,841.46 : x
  2. Step 2: Convert to fraction form
    81,839.55/112,921.64 = 47,841.46/x
  3. Step 3: Cross multiply
    81,839.55x = 112,921.64 × 47,841.46
  4. Step 4: Simplify right side
    81,839.55x = 5,402,335,883.99
  5. Step 5: Solve for x
    x = 5,402,335,883.99/81,839.55
  6. Step 6: Final answer
    x = 66,011.31

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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.