Home / 88,239.81-121,709.36-58,015.47

Finding the Fourth Proportional to 88,239.81, 121,709.36 and 58,015.47

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Solution

The fourth proportional to 88,239.81, 121,709.36 and 58,015.47 is: 80,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,239.81 : 121,709.36 = 58,015.47 : x
  2. Step 2: Convert to fraction form
    88,239.81/121,709.36 = 58,015.47/x
  3. Step 3: Cross multiply
    88,239.81x = 121,709.36 × 58,015.47
  4. Step 4: Simplify right side
    88,239.81x = 7,061,025,433.72
  5. Step 5: Solve for x
    x = 7,061,025,433.72/88,239.81
  6. Step 6: Final answer
    x = 80,020.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.