Home / 81,285.06-121,939.23-25,130.05

Finding the Fourth Proportional to 81,285.06, 121,939.23 and 25,130.05

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Solution

The fourth proportional to 81,285.06, 121,939.23 and 25,130.05 is: 37,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.06 : 121,939.23 = 25,130.05 : x
  2. Step 2: Convert to fraction form
    81,285.06/121,939.23 = 25,130.05/x
  3. Step 3: Cross multiply
    81,285.06x = 121,939.23 × 25,130.05
  4. Step 4: Simplify right side
    81,285.06x = 3,064,338,946.86
  5. Step 5: Solve for x
    x = 3,064,338,946.86/81,285.06
  6. Step 6: Final answer
    x = 37,698.67

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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.