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Finding the Fourth Proportional to 84,688.91, 127,045.70 and 45,224.49

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Solution

The fourth proportional to 84,688.91, 127,045.70 and 45,224.49 is: 67,843.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,688.91 : 127,045.70 = 45,224.49 : x
  2. Step 2: Convert to fraction form
    84,688.91/127,045.70 = 45,224.49/x
  3. Step 3: Cross multiply
    84,688.91x = 127,045.70 × 45,224.49
  4. Step 4: Simplify right side
    84,688.91x = 5,745,577,409.08
  5. Step 5: Solve for x
    x = 5,745,577,409.08/84,688.91
  6. Step 6: Final answer
    x = 67,843.33

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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.