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Finding the Fourth Proportional to 76,873.05, 106,042.16 and 45,035.80

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Solution

The fourth proportional to 76,873.05, 106,042.16 and 45,035.80 is: 62,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,873.05 : 106,042.16 = 45,035.80 : x
  2. Step 2: Convert to fraction form
    76,873.05/106,042.16 = 45,035.80/x
  3. Step 3: Cross multiply
    76,873.05x = 106,042.16 × 45,035.80
  4. Step 4: Simplify right side
    76,873.05x = 4,775,693,356.81
  5. Step 5: Solve for x
    x = 4,775,693,356.81/76,873.05
  6. Step 6: Final answer
    x = 62,124.42

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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.