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Finding the Fourth Proportional to 65,339.51, 90,166.77 and 36,656.78

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Solution

The fourth proportional to 65,339.51, 90,166.77 and 36,656.78 is: 50,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,339.51 : 90,166.77 = 36,656.78 : x
  2. Step 2: Convert to fraction form
    65,339.51/90,166.77 = 36,656.78/x
  3. Step 3: Cross multiply
    65,339.51x = 90,166.77 × 36,656.78
  4. Step 4: Simplify right side
    65,339.51x = 3,305,223,000.37
  5. Step 5: Solve for x
    x = 3,305,223,000.37/65,339.51
  6. Step 6: Final answer
    x = 50,585.37

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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.