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Finding the Fourth Proportional to 65,431.60, 90,296.04 and 37,137.76

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Solution

The fourth proportional to 65,431.60, 90,296.04 and 37,137.76 is: 51,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,431.60 : 90,296.04 = 37,137.76 : x
  2. Step 2: Convert to fraction form
    65,431.60/90,296.04 = 37,137.76/x
  3. Step 3: Cross multiply
    65,431.60x = 90,296.04 × 37,137.76
  4. Step 4: Simplify right side
    65,431.60x = 3,353,392,662.47
  5. Step 5: Solve for x
    x = 3,353,392,662.47/65,431.60
  6. Step 6: Final answer
    x = 51,250.35

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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.