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Finding the Fourth Proportional to 57,802.86, 79,732.89 and 39,866.22

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Solution

The fourth proportional to 57,802.86, 79,732.89 and 39,866.22 is: 54,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,802.86 : 79,732.89 = 39,866.22 : x
  2. Step 2: Convert to fraction form
    57,802.86/79,732.89 = 39,866.22/x
  3. Step 3: Cross multiply
    57,802.86x = 79,732.89 × 39,866.22
  4. Step 4: Simplify right side
    57,802.86x = 3,178,648,933.98
  5. Step 5: Solve for x
    x = 3,178,648,933.98/57,802.86
  6. Step 6: Final answer
    x = 54,991.21

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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.