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Finding the Fourth Proportional to 64,895.76, 97,353.36 and 20,508.30

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Solution

The fourth proportional to 64,895.76, 97,353.36 and 20,508.30 is: 30,765.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,895.76 : 97,353.36 = 20,508.30 : x
  2. Step 2: Convert to fraction form
    64,895.76/97,353.36 = 20,508.30/x
  3. Step 3: Cross multiply
    64,895.76x = 97,353.36 × 20,508.30
  4. Step 4: Simplify right side
    64,895.76x = 1,996,551,912.89
  5. Step 5: Solve for x
    x = 1,996,551,912.89/64,895.76
  6. Step 6: Final answer
    x = 30,765.52

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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.