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Finding the Fourth Proportional to 64,872.20, 97,308.29 and 15,624.20

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Solution

The fourth proportional to 64,872.20, 97,308.29 and 15,624.20 is: 23,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.20 : 97,308.29 = 15,624.20 : x
  2. Step 2: Convert to fraction form
    64,872.20/97,308.29 = 15,624.20/x
  3. Step 3: Cross multiply
    64,872.20x = 97,308.29 × 15,624.20
  4. Step 4: Simplify right side
    64,872.20x = 1,520,363,619.96
  5. Step 5: Solve for x
    x = 1,520,363,619.96/64,872.20
  6. Step 6: Final answer
    x = 23,436.29

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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.