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Finding the Fourth Proportional to 64,872.63, 97,300.58 and 20,503.87

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Solution

The fourth proportional to 64,872.63, 97,300.58 and 20,503.87 is: 30,753.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.63 : 97,300.58 = 20,503.87 : x
  2. Step 2: Convert to fraction form
    64,872.63/97,300.58 = 20,503.87/x
  3. Step 3: Cross multiply
    64,872.63x = 97,300.58 × 20,503.87
  4. Step 4: Simplify right side
    64,872.63x = 1,995,038,097.47
  5. Step 5: Solve for x
    x = 1,995,038,097.47/64,872.63
  6. Step 6: Final answer
    x = 30,753.16

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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.