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Finding the Fourth Proportional to 65,404.80, 98,156.88 and 47,920.32

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Solution

The fourth proportional to 65,404.80, 98,156.88 and 47,920.32 is: 71,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,404.80 : 98,156.88 = 47,920.32 : x
  2. Step 2: Convert to fraction form
    65,404.80/98,156.88 = 47,920.32/x
  3. Step 3: Cross multiply
    65,404.80x = 98,156.88 × 47,920.32
  4. Step 4: Simplify right side
    65,404.80x = 4,703,709,099.80
  5. Step 5: Solve for x
    x = 4,703,709,099.80/65,404.80
  6. Step 6: Final answer
    x = 71,916.88

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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.