Home / 90,813.61-136,219.05-40,858.43

Finding the Fourth Proportional to 90,813.61, 136,219.05 and 40,858.43

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Solution

The fourth proportional to 90,813.61, 136,219.05 and 40,858.43 is: 61,287.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,813.61 : 136,219.05 = 40,858.43 : x
  2. Step 2: Convert to fraction form
    90,813.61/136,219.05 = 40,858.43/x
  3. Step 3: Cross multiply
    90,813.61x = 136,219.05 × 40,858.43
  4. Step 4: Simplify right side
    90,813.61x = 5,565,696,314.80
  5. Step 5: Solve for x
    x = 5,565,696,314.80/90,813.61
  6. Step 6: Final answer
    x = 61,287.03

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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.