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Finding the Fourth Proportional to 65,609.10, 90,584.14 and 50,475.06

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Solution

The fourth proportional to 65,609.10, 90,584.14 and 50,475.06 is: 69,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,609.10 : 90,584.14 = 50,475.06 : x
  2. Step 2: Convert to fraction form
    65,609.10/90,584.14 = 50,475.06/x
  3. Step 3: Cross multiply
    65,609.10x = 90,584.14 × 50,475.06
  4. Step 4: Simplify right side
    65,609.10x = 4,572,239,901.55
  5. Step 5: Solve for x
    x = 4,572,239,901.55/65,609.10
  6. Step 6: Final answer
    x = 69,689.11

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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.