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Finding the Fourth Proportional to 67,636.80, 101,455.20 and 64,915.20

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Solution

The fourth proportional to 67,636.80, 101,455.20 and 64,915.20 is: 97,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,636.80 : 101,455.20 = 64,915.20 : x
  2. Step 2: Convert to fraction form
    67,636.80/101,455.20 = 64,915.20/x
  3. Step 3: Cross multiply
    67,636.80x = 101,455.20 × 64,915.20
  4. Step 4: Simplify right side
    67,636.80x = 6,585,984,599.04
  5. Step 5: Solve for x
    x = 6,585,984,599.04/67,636.80
  6. Step 6: Final answer
    x = 97,372.80

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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.