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Finding the Fourth Proportional to 81,210.59, 121,829.02 and 25,037.56

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Solution

The fourth proportional to 81,210.59, 121,829.02 and 25,037.56 is: 37,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.59 : 121,829.02 = 25,037.56 : x
  2. Step 2: Convert to fraction form
    81,210.59/121,829.02 = 25,037.56/x
  3. Step 3: Cross multiply
    81,210.59x = 121,829.02 × 25,037.56
  4. Step 4: Simplify right side
    81,210.59x = 3,050,301,397.99
  5. Step 5: Solve for x
    x = 3,050,301,397.99/81,210.59
  6. Step 6: Final answer
    x = 37,560.39

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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.