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Finding the Fourth Proportional to 65,271.87, 90,079.64 and 36,977.79

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Solution

The fourth proportional to 65,271.87, 90,079.64 and 36,977.79 is: 51,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,271.87 : 90,079.64 = 36,977.79 : x
  2. Step 2: Convert to fraction form
    65,271.87/90,079.64 = 36,977.79/x
  3. Step 3: Cross multiply
    65,271.87x = 90,079.64 × 36,977.79
  4. Step 4: Simplify right side
    65,271.87x = 3,330,945,826.31
  5. Step 5: Solve for x
    x = 3,330,945,826.31/65,271.87
  6. Step 6: Final answer
    x = 51,031.87

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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.