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Finding the Fourth Proportional to 65,495.98, 90,395.39 and 38,645.14

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Solution

The fourth proportional to 65,495.98, 90,395.39 and 38,645.14 is: 53,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,495.98 : 90,395.39 = 38,645.14 : x
  2. Step 2: Convert to fraction form
    65,495.98/90,395.39 = 38,645.14/x
  3. Step 3: Cross multiply
    65,495.98x = 90,395.39 × 38,645.14
  4. Step 4: Simplify right side
    65,495.98x = 3,493,342,501.90
  5. Step 5: Solve for x
    x = 3,493,342,501.90/65,495.98
  6. Step 6: Final answer
    x = 53,336.75

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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.