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Finding the Fourth Proportional to 65,615.95, 90,552.96 and 36,945.47

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Solution

The fourth proportional to 65,615.95, 90,552.96 and 36,945.47 is: 50,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,615.95 : 90,552.96 = 36,945.47 : x
  2. Step 2: Convert to fraction form
    65,615.95/90,552.96 = 36,945.47/x
  3. Step 3: Cross multiply
    65,615.95x = 90,552.96 × 36,945.47
  4. Step 4: Simplify right side
    65,615.95x = 3,345,521,893.47
  5. Step 5: Solve for x
    x = 3,345,521,893.47/65,615.95
  6. Step 6: Final answer
    x = 50,986.41

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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.