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Finding the Fourth Proportional to 65,459.26, 90,335.00 and 36,390.36

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Solution

The fourth proportional to 65,459.26, 90,335.00 and 36,390.36 is: 50,219.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,459.26 : 90,335.00 = 36,390.36 : x
  2. Step 2: Convert to fraction form
    65,459.26/90,335.00 = 36,390.36/x
  3. Step 3: Cross multiply
    65,459.26x = 90,335.00 × 36,390.36
  4. Step 4: Simplify right side
    65,459.26x = 3,287,323,395.64
  5. Step 5: Solve for x
    x = 3,287,323,395.64/65,459.26
  6. Step 6: Final answer
    x = 50,219.38

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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.