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Finding the Fourth Proportional to 67,621.20, 101,431.80 and 63,214.80

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Solution

The fourth proportional to 67,621.20, 101,431.80 and 63,214.80 is: 94,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,621.20 : 101,431.80 = 63,214.80 : x
  2. Step 2: Convert to fraction form
    67,621.20/101,431.80 = 63,214.80/x
  3. Step 3: Cross multiply
    67,621.20x = 101,431.80 × 63,214.80
  4. Step 4: Simplify right side
    67,621.20x = 6,411,990,950.64
  5. Step 5: Solve for x
    x = 6,411,990,950.64/67,621.20
  6. Step 6: Final answer
    x = 94,822.20

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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.