Home / 90,880.10-136,338.61-38,289.59

Finding the Fourth Proportional to 90,880.10, 136,338.61 and 38,289.59

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Solution

The fourth proportional to 90,880.10, 136,338.61 and 38,289.59 is: 57,442.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,880.10 : 136,338.61 = 38,289.59 : x
  2. Step 2: Convert to fraction form
    90,880.10/136,338.61 = 38,289.59/x
  3. Step 3: Cross multiply
    90,880.10x = 136,338.61 × 38,289.59
  4. Step 4: Simplify right side
    90,880.10x = 5,220,348,738.73
  5. Step 5: Solve for x
    x = 5,220,348,738.73/90,880.10
  6. Step 6: Final answer
    x = 57,442.15

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1.5x scale

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.