Home / 81,210.10-121,828.28-25,037.06

Finding the Fourth Proportional to 81,210.10, 121,828.28 and 25,037.06

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Solution

The fourth proportional to 81,210.10, 121,828.28 and 25,037.06 is: 37,559.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.10 : 121,828.28 = 25,037.06 : x
  2. Step 2: Convert to fraction form
    81,210.10/121,828.28 = 25,037.06/x
  3. Step 3: Cross multiply
    81,210.10x = 121,828.28 × 25,037.06
  4. Step 4: Simplify right side
    81,210.10x = 3,050,221,956.06
  5. Step 5: Solve for x
    x = 3,050,221,956.06/81,210.10
  6. Step 6: Final answer
    x = 37,559.64

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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.