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Finding the Fourth Proportional to 90,901.79, 136,352.75 and 43,505.75

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Solution

The fourth proportional to 90,901.79, 136,352.75 and 43,505.75 is: 65,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,901.79 : 136,352.75 = 43,505.75 : x
  2. Step 2: Convert to fraction form
    90,901.79/136,352.75 = 43,505.75/x
  3. Step 3: Cross multiply
    90,901.79x = 136,352.75 × 43,505.75
  4. Step 4: Simplify right side
    90,901.79x = 5,932,128,653.31
  5. Step 5: Solve for x
    x = 5,932,128,653.31/90,901.79
  6. Step 6: Final answer
    x = 65,258.66

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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.