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Finding the Fourth Proportional to 90,139.71, 135,114.23 and 33,955.51

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Solution

The fourth proportional to 90,139.71, 135,114.23 and 33,955.51 is: 50,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,139.71 : 135,114.23 = 33,955.51 : x
  2. Step 2: Convert to fraction form
    90,139.71/135,114.23 = 33,955.51/x
  3. Step 3: Cross multiply
    90,139.71x = 135,114.23 × 33,955.51
  4. Step 4: Simplify right side
    90,139.71x = 4,587,872,587.91
  5. Step 5: Solve for x
    x = 4,587,872,587.91/90,139.71
  6. Step 6: Final answer
    x = 50,897.35

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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.