Home / 81,292.35-121,886.49-39,088.37

Finding the Fourth Proportional to 81,292.35, 121,886.49 and 39,088.37

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Solution

The fourth proportional to 81,292.35, 121,886.49 and 39,088.37 is: 58,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.35 : 121,886.49 = 39,088.37 : x
  2. Step 2: Convert to fraction form
    81,292.35/121,886.49 = 39,088.37/x
  3. Step 3: Cross multiply
    81,292.35x = 121,886.49 × 39,088.37
  4. Step 4: Simplify right side
    81,292.35x = 4,764,343,609.69
  5. Step 5: Solve for x
    x = 4,764,343,609.69/81,292.35
  6. Step 6: Final answer
    x = 58,607.53

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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.