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Finding the Fourth Proportional to 65,901.40, 98,861.70 and 21,530.20

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Solution

The fourth proportional to 65,901.40, 98,861.70 and 21,530.20 is: 32,298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,901.40 : 98,861.70 = 21,530.20 : x
  2. Step 2: Convert to fraction form
    65,901.40/98,861.70 = 21,530.20/x
  3. Step 3: Cross multiply
    65,901.40x = 98,861.70 × 21,530.20
  4. Step 4: Simplify right side
    65,901.40x = 2,128,512,173.34
  5. Step 5: Solve for x
    x = 2,128,512,173.34/65,901.40
  6. Step 6: Final answer
    x = 32,298.44

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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.