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Finding the Fourth Proportional to 65,329.88, 97,993.20 and 20,959.76

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Solution

The fourth proportional to 65,329.88, 97,993.20 and 20,959.76 is: 31,439.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,329.88 : 97,993.20 = 20,959.76 : x
  2. Step 2: Convert to fraction form
    65,329.88/97,993.20 = 20,959.76/x
  3. Step 3: Cross multiply
    65,329.88x = 97,993.20 × 20,959.76
  4. Step 4: Simplify right side
    65,329.88x = 2,053,913,953.63
  5. Step 5: Solve for x
    x = 2,053,913,953.63/65,329.88
  6. Step 6: Final answer
    x = 31,439.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.