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Finding the Fourth Proportional to 65,876.16, 90,908.48 and 35,660.71

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Solution

The fourth proportional to 65,876.16, 90,908.48 and 35,660.71 is: 49,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,876.16 : 90,908.48 = 35,660.71 : x
  2. Step 2: Convert to fraction form
    65,876.16/90,908.48 = 35,660.71/x
  3. Step 3: Cross multiply
    65,876.16x = 90,908.48 × 35,660.71
  4. Step 4: Simplify right side
    65,876.16x = 3,241,860,941.82
  5. Step 5: Solve for x
    x = 3,241,860,941.82/65,876.16
  6. Step 6: Final answer
    x = 49,211.44

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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.