Home / 76,881.52-115,313.70-20,727.22

Finding the Fourth Proportional to 76,881.52, 115,313.70 and 20,727.22

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Solution

The fourth proportional to 76,881.52, 115,313.70 and 20,727.22 is: 31,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,881.52 : 115,313.70 = 20,727.22 : x
  2. Step 2: Convert to fraction form
    76,881.52/115,313.70 = 20,727.22/x
  3. Step 3: Cross multiply
    76,881.52x = 115,313.70 × 20,727.22
  4. Step 4: Simplify right side
    76,881.52x = 2,390,132,428.91
  5. Step 5: Solve for x
    x = 2,390,132,428.91/76,881.52
  6. Step 6: Final answer
    x = 31,088.52

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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.