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Finding the Fourth Proportional to 78,398.46, 108,214.47 and 50,104.08

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Solution

The fourth proportional to 78,398.46, 108,214.47 and 50,104.08 is: 69,159.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,398.46 : 108,214.47 = 50,104.08 : x
  2. Step 2: Convert to fraction form
    78,398.46/108,214.47 = 50,104.08/x
  3. Step 3: Cross multiply
    78,398.46x = 108,214.47 × 50,104.08
  4. Step 4: Simplify right side
    78,398.46x = 5,421,986,462.04
  5. Step 5: Solve for x
    x = 5,421,986,462.04/78,398.46
  6. Step 6: Final answer
    x = 69,159.35

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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.