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Finding the Fourth Proportional to 65,275.40, 90,080.35 and 36,986.60

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Solution

The fourth proportional to 65,275.40, 90,080.35 and 36,986.60 is: 51,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.40 : 90,080.35 = 36,986.60 : x
  2. Step 2: Convert to fraction form
    65,275.40/90,080.35 = 36,986.60/x
  3. Step 3: Cross multiply
    65,275.40x = 90,080.35 × 36,986.60
  4. Step 4: Simplify right side
    65,275.40x = 3,331,765,330.44
  5. Step 5: Solve for x
    x = 3,331,765,330.44/65,275.40
  6. Step 6: Final answer
    x = 51,041.67

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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.