Home / 90,152.85-124,513.05-61,422.66

Finding the Fourth Proportional to 90,152.85, 124,513.05 and 61,422.66

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Solution

The fourth proportional to 90,152.85, 124,513.05 and 61,422.66 is: 84,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,152.85 : 124,513.05 = 61,422.66 : x
  2. Step 2: Convert to fraction form
    90,152.85/124,513.05 = 61,422.66/x
  3. Step 3: Cross multiply
    90,152.85x = 124,513.05 × 61,422.66
  4. Step 4: Simplify right side
    90,152.85x = 7,647,922,735.71
  5. Step 5: Solve for x
    x = 7,647,922,735.71/90,152.85
  6. Step 6: Final answer
    x = 84,832.84

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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.