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Finding the Fourth Proportional to 64,672.64, 97,010.16 and 20,298.40

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Solution

The fourth proportional to 64,672.64, 97,010.16 and 20,298.40 is: 30,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,672.64 : 97,010.16 = 20,298.40 : x
  2. Step 2: Convert to fraction form
    64,672.64/97,010.16 = 20,298.40/x
  3. Step 3: Cross multiply
    64,672.64x = 97,010.16 × 20,298.40
  4. Step 4: Simplify right side
    64,672.64x = 1,969,151,031.74
  5. Step 5: Solve for x
    x = 1,969,151,031.74/64,672.64
  6. Step 6: Final answer
    x = 30,447.98

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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.