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Finding the Fourth Proportional to 77,349.71, 106,722.69 and 45,512.66

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Solution

The fourth proportional to 77,349.71, 106,722.69 and 45,512.66 is: 62,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,349.71 : 106,722.69 = 45,512.66 : x
  2. Step 2: Convert to fraction form
    77,349.71/106,722.69 = 45,512.66/x
  3. Step 3: Cross multiply
    77,349.71x = 106,722.69 × 45,512.66
  4. Step 4: Simplify right side
    77,349.71x = 4,857,233,504.26
  5. Step 5: Solve for x
    x = 4,857,233,504.26/77,349.71
  6. Step 6: Final answer
    x = 62,795.76

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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.