Home / 77,289.96-115,724.16-58,513.20

Finding the Fourth Proportional to 77,289.96, 115,724.16 and 58,513.20

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Solution

The fourth proportional to 77,289.96, 115,724.16 and 58,513.20 is: 87,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,289.96 : 115,724.16 = 58,513.20 : x
  2. Step 2: Convert to fraction form
    77,289.96/115,724.16 = 58,513.20/x
  3. Step 3: Cross multiply
    77,289.96x = 115,724.16 × 58,513.20
  4. Step 4: Simplify right side
    77,289.96x = 6,771,390,918.91
  5. Step 5: Solve for x
    x = 6,771,390,918.91/77,289.96
  6. Step 6: Final answer
    x = 87,610.23

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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.