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Finding the Fourth Proportional to 65,293.60, 90,103.88 and 38,074.76

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Solution

The fourth proportional to 65,293.60, 90,103.88 and 38,074.76 is: 52,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,293.60 : 90,103.88 = 38,074.76 : x
  2. Step 2: Convert to fraction form
    65,293.60/90,103.88 = 38,074.76/x
  3. Step 3: Cross multiply
    65,293.60x = 90,103.88 × 38,074.76
  4. Step 4: Simplify right side
    65,293.60x = 3,430,683,606.07
  5. Step 5: Solve for x
    x = 3,430,683,606.07/65,293.60
  6. Step 6: Final answer
    x = 52,542.42

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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.