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Finding the Fourth Proportional to 65,305.31, 90,122.35 and 36,631.34

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Solution

The fourth proportional to 65,305.31, 90,122.35 and 36,631.34 is: 50,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,305.31 : 90,122.35 = 36,631.34 : x
  2. Step 2: Convert to fraction form
    65,305.31/90,122.35 = 36,631.34/x
  3. Step 3: Cross multiply
    65,305.31x = 90,122.35 × 36,631.34
  4. Step 4: Simplify right side
    65,305.31x = 3,301,302,444.45
  5. Step 5: Solve for x
    x = 3,301,302,444.45/65,305.31
  6. Step 6: Final answer
    x = 50,551.82

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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.