Home / 77,720.79-116,583.16-58,123.75

Finding the Fourth Proportional to 77,720.79, 116,583.16 and 58,123.75

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Solution

The fourth proportional to 77,720.79, 116,583.16 and 58,123.75 is: 87,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720.79 : 116,583.16 = 58,123.75 : x
  2. Step 2: Convert to fraction form
    77,720.79/116,583.16 = 58,123.75/x
  3. Step 3: Cross multiply
    77,720.79x = 116,583.16 × 58,123.75
  4. Step 4: Simplify right side
    77,720.79x = 6,776,250,446.05
  5. Step 5: Solve for x
    x = 6,776,250,446.05/77,720.79
  6. Step 6: Final answer
    x = 87,187.10

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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.