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Finding the Fourth Proportional to 64,872.10, 97,300.95 and 53,164.90

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Solution

The fourth proportional to 64,872.10, 97,300.95 and 53,164.90 is: 79,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.10 : 97,300.95 = 53,164.90 : x
  2. Step 2: Convert to fraction form
    64,872.10/97,300.95 = 53,164.90/x
  3. Step 3: Cross multiply
    64,872.10x = 97,300.95 × 53,164.90
  4. Step 4: Simplify right side
    64,872.10x = 5,172,995,276.66
  5. Step 5: Solve for x
    x = 5,172,995,276.66/64,872.10
  6. Step 6: Final answer
    x = 79,741.45

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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.