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Finding the Fourth Proportional to 65,276.32, 90,078.60 and 36,983.56

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Solution

The fourth proportional to 65,276.32, 90,078.60 and 36,983.56 is: 51,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,276.32 : 90,078.60 = 36,983.56 : x
  2. Step 2: Convert to fraction form
    65,276.32/90,078.60 = 36,983.56/x
  3. Step 3: Cross multiply
    65,276.32x = 90,078.60 × 36,983.56
  4. Step 4: Simplify right side
    65,276.32x = 3,331,427,307.82
  5. Step 5: Solve for x
    x = 3,331,427,307.82/65,276.32
  6. Step 6: Final answer
    x = 51,035.77

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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.