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Finding the Fourth Proportional to 57,118.66, 78,859.48 and 36,709

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Solution

The fourth proportional to 57,118.66, 78,859.48 and 36,709 is: 50,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,118.66 : 78,859.48 = 36,709 : x
  2. Step 2: Convert to fraction form
    57,118.66/78,859.48 = 36,709/x
  3. Step 3: Cross multiply
    57,118.66x = 78,859.48 × 36,709
  4. Step 4: Simplify right side
    57,118.66x = 2,894,852,651.32
  5. Step 5: Solve for x
    x = 2,894,852,651.32/57,118.66
  6. Step 6: Final answer
    x = 50,681.38

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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.