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Finding the Fourth Proportional to 65,462.84, 90,342.26 and 38,621.08

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Solution

The fourth proportional to 65,462.84, 90,342.26 and 38,621.08 is: 53,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,462.84 : 90,342.26 = 38,621.08 : x
  2. Step 2: Convert to fraction form
    65,462.84/90,342.26 = 38,621.08/x
  3. Step 3: Cross multiply
    65,462.84x = 90,342.26 × 38,621.08
  4. Step 4: Simplify right side
    65,462.84x = 3,489,115,650.84
  5. Step 5: Solve for x
    x = 3,489,115,650.84/65,462.84
  6. Step 6: Final answer
    x = 53,299.18

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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.