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Finding the Fourth Proportional to 85,313, 127,716.69 and 63,225.47

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Solution

The fourth proportional to 85,313, 127,716.69 and 63,225.47 is: 94,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313 : 127,716.69 = 63,225.47 : x
  2. Step 2: Convert to fraction form
    85,313/127,716.69 = 63,225.47/x
  3. Step 3: Cross multiply
    85,313x = 127,716.69 × 63,225.47
  4. Step 4: Simplify right side
    85,313x = 8,074,947,752.09
  5. Step 5: Solve for x
    x = 8,074,947,752.09/85,313
  6. Step 6: Final answer
    x = 94,650.85

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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.