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Finding the Fourth Proportional to 78,957.93, 108,911.03 and 47,102.25

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Solution

The fourth proportional to 78,957.93, 108,911.03 and 47,102.25 is: 64,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,957.93 : 108,911.03 = 47,102.25 : x
  2. Step 2: Convert to fraction form
    78,957.93/108,911.03 = 47,102.25/x
  3. Step 3: Cross multiply
    78,957.93x = 108,911.03 × 47,102.25
  4. Step 4: Simplify right side
    78,957.93x = 5,129,954,327.31
  5. Step 5: Solve for x
    x = 5,129,954,327.31/78,957.93
  6. Step 6: Final answer
    x = 64,970.73

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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.