Home / 90,678.87-136,041.36-53,270.58

Finding the Fourth Proportional to 90,678.87, 136,041.36 and 53,270.58

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Solution

The fourth proportional to 90,678.87, 136,041.36 and 53,270.58 is: 79,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.87 : 136,041.36 = 53,270.58 : x
  2. Step 2: Convert to fraction form
    90,678.87/136,041.36 = 53,270.58/x
  3. Step 3: Cross multiply
    90,678.87x = 136,041.36 × 53,270.58
  4. Step 4: Simplify right side
    90,678.87x = 7,247,002,151.19
  5. Step 5: Solve for x
    x = 7,247,002,151.19/90,678.87
  6. Step 6: Final answer
    x = 79,919.41

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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.