Home / 81,037.64-121,404.58-47,657.94

Finding the Fourth Proportional to 81,037.64, 121,404.58 and 47,657.94

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Solution

The fourth proportional to 81,037.64, 121,404.58 and 47,657.94 is: 71,397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,037.64 : 121,404.58 = 47,657.94 : x
  2. Step 2: Convert to fraction form
    81,037.64/121,404.58 = 47,657.94/x
  3. Step 3: Cross multiply
    81,037.64x = 121,404.58 × 47,657.94
  4. Step 4: Simplify right side
    81,037.64x = 5,785,892,189.37
  5. Step 5: Solve for x
    x = 5,785,892,189.37/81,037.64
  6. Step 6: Final answer
    x = 71,397.59

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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.