Home / 81,260.24-121,926.72-51,670.40

Finding the Fourth Proportional to 81,260.24, 121,926.72 and 51,670.40

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Solution

The fourth proportional to 81,260.24, 121,926.72 and 51,670.40 is: 77,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,260.24 : 121,926.72 = 51,670.40 : x
  2. Step 2: Convert to fraction form
    81,260.24/121,926.72 = 51,670.40/x
  3. Step 3: Cross multiply
    81,260.24x = 121,926.72 × 51,670.40
  4. Step 4: Simplify right side
    81,260.24x = 6,300,002,393.09
  5. Step 5: Solve for x
    x = 6,300,002,393.09/81,260.24
  6. Step 6: Final answer
    x = 77,528.72

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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.