Home / 81,211.09-121,829.77-25,038.06

Finding the Fourth Proportional to 81,211.09, 121,829.77 and 25,038.06

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Solution

The fourth proportional to 81,211.09, 121,829.77 and 25,038.06 is: 37,561.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,211.09 : 121,829.77 = 25,038.06 : x
  2. Step 2: Convert to fraction form
    81,211.09/121,829.77 = 25,038.06/x
  3. Step 3: Cross multiply
    81,211.09x = 121,829.77 × 25,038.06
  4. Step 4: Simplify right side
    81,211.09x = 3,050,381,091.05
  5. Step 5: Solve for x
    x = 3,050,381,091.05/81,211.09
  6. Step 6: Final answer
    x = 37,561.14

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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.