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Finding the Fourth Proportional to 71,216.99, 98,214.41 and 61,142.21

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Solution

The fourth proportional to 71,216.99, 98,214.41 and 61,142.21 is: 84,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,216.99 : 98,214.41 = 61,142.21 : x
  2. Step 2: Convert to fraction form
    71,216.99/98,214.41 = 61,142.21/x
  3. Step 3: Cross multiply
    71,216.99x = 98,214.41 × 61,142.21
  4. Step 4: Simplify right side
    71,216.99x = 6,005,046,081.25
  5. Step 5: Solve for x
    x = 6,005,046,081.25/71,216.99
  6. Step 6: Final answer
    x = 84,320.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.