Home / 77,718.79-116,580.16-58,121.75

Finding the Fourth Proportional to 77,718.79, 116,580.16 and 58,121.75

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Solution

The fourth proportional to 77,718.79, 116,580.16 and 58,121.75 is: 87,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,718.79 : 116,580.16 = 58,121.75 : x
  2. Step 2: Convert to fraction form
    77,718.79/116,580.16 = 58,121.75/x
  3. Step 3: Cross multiply
    77,718.79x = 116,580.16 × 58,121.75
  4. Step 4: Simplify right side
    77,718.79x = 6,775,843,278.58
  5. Step 5: Solve for x
    x = 6,775,843,278.58/77,718.79
  6. Step 6: Final answer
    x = 87,184.11

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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.