Home / 81,160.56-121,573.12-47,777.76

Finding the Fourth Proportional to 81,160.56, 121,573.12 and 47,777.76

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Solution

The fourth proportional to 81,160.56, 121,573.12 and 47,777.76 is: 71,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160.56 : 121,573.12 = 47,777.76 : x
  2. Step 2: Convert to fraction form
    81,160.56/121,573.12 = 47,777.76/x
  3. Step 3: Cross multiply
    81,160.56x = 121,573.12 × 47,777.76
  4. Step 4: Simplify right side
    81,160.56x = 5,808,491,349.81
  5. Step 5: Solve for x
    x = 5,808,491,349.81/81,160.56
  6. Step 6: Final answer
    x = 71,567.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.