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Finding the Fourth Proportional to 57,802.76, 79,744.20 and 45,818

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Solution

The fourth proportional to 57,802.76, 79,744.20 and 45,818 is: 63,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,802.76 : 79,744.20 = 45,818 : x
  2. Step 2: Convert to fraction form
    57,802.76/79,744.20 = 45,818/x
  3. Step 3: Cross multiply
    57,802.76x = 79,744.20 × 45,818
  4. Step 4: Simplify right side
    57,802.76x = 3,653,719,755.60
  5. Step 5: Solve for x
    x = 3,653,719,755.60/57,802.76
  6. Step 6: Final answer
    x = 63,210.13

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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.