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Finding the Fourth Proportional to 64,967.28, 97,489.80 and 28,031.28

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Solution

The fourth proportional to 64,967.28, 97,489.80 and 28,031.28 is: 42,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,967.28 : 97,489.80 = 28,031.28 : x
  2. Step 2: Convert to fraction form
    64,967.28/97,489.80 = 28,031.28/x
  3. Step 3: Cross multiply
    64,967.28x = 97,489.80 × 28,031.28
  4. Step 4: Simplify right side
    64,967.28x = 2,732,763,880.94
  5. Step 5: Solve for x
    x = 2,732,763,880.94/64,967.28
  6. Step 6: Final answer
    x = 42,063.70

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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.