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Finding the Fourth Proportional to 65,338.60, 90,164.72 and 37,045.30

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Solution

The fourth proportional to 65,338.60, 90,164.72 and 37,045.30 is: 51,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,338.60 : 90,164.72 = 37,045.30 : x
  2. Step 2: Convert to fraction form
    65,338.60/90,164.72 = 37,045.30/x
  3. Step 3: Cross multiply
    65,338.60x = 90,164.72 × 37,045.30
  4. Step 4: Simplify right side
    65,338.60x = 3,340,179,101.82
  5. Step 5: Solve for x
    x = 3,340,179,101.82/65,338.60
  6. Step 6: Final answer
    x = 51,121.07

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1.5x scale

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.