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Finding the Fourth Proportional to 64,907.20, 97,349.76 and 18,149.20

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Solution

The fourth proportional to 64,907.20, 97,349.76 and 18,149.20 is: 27,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,907.20 : 97,349.76 = 18,149.20 : x
  2. Step 2: Convert to fraction form
    64,907.20/97,349.76 = 18,149.20/x
  3. Step 3: Cross multiply
    64,907.20x = 97,349.76 × 18,149.20
  4. Step 4: Simplify right side
    64,907.20x = 1,766,820,264.19
  5. Step 5: Solve for x
    x = 1,766,820,264.19/64,907.20
  6. Step 6: Final answer
    x = 27,220.71

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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.