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Finding the Fourth Proportional to 65,274.16, 90,078.12 and 36,985.24

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Solution

The fourth proportional to 65,274.16, 90,078.12 and 36,985.24 is: 51,039.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,274.16 : 90,078.12 = 36,985.24 : x
  2. Step 2: Convert to fraction form
    65,274.16/90,078.12 = 36,985.24/x
  3. Step 3: Cross multiply
    65,274.16x = 90,078.12 × 36,985.24
  4. Step 4: Simplify right side
    65,274.16x = 3,331,560,886.95
  5. Step 5: Solve for x
    x = 3,331,560,886.95/65,274.16
  6. Step 6: Final answer
    x = 51,039.51

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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.