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Finding the Fourth Proportional to 65,017.76, 97,490.16 and 20,636.24

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Solution

The fourth proportional to 65,017.76, 97,490.16 and 20,636.24 is: 30,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,017.76 : 97,490.16 = 20,636.24 : x
  2. Step 2: Convert to fraction form
    65,017.76/97,490.16 = 20,636.24/x
  3. Step 3: Cross multiply
    65,017.76x = 97,490.16 × 20,636.24
  4. Step 4: Simplify right side
    65,017.76x = 2,011,830,339.40
  5. Step 5: Solve for x
    x = 2,011,830,339.40/65,017.76
  6. Step 6: Final answer
    x = 30,942.78

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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.