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Finding the Fourth Proportional to 65,693.85, 90,657.60 and 37,399.50

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Solution

The fourth proportional to 65,693.85, 90,657.60 and 37,399.50 is: 51,611.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,693.85 : 90,657.60 = 37,399.50 : x
  2. Step 2: Convert to fraction form
    65,693.85/90,657.60 = 37,399.50/x
  3. Step 3: Cross multiply
    65,693.85x = 90,657.60 × 37,399.50
  4. Step 4: Simplify right side
    65,693.85x = 3,390,548,911.20
  5. Step 5: Solve for x
    x = 3,390,548,911.20/65,693.85
  6. Step 6: Final answer
    x = 51,611.36

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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.