Home / 47,178.93-70,768.40-12,118.62

Finding the Fourth Proportional to 47,178.93, 70,768.40 and 12,118.62

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Solution

The fourth proportional to 47,178.93, 70,768.40 and 12,118.62 is: 18,177.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,178.93 : 70,768.40 = 12,118.62 : x
  2. Step 2: Convert to fraction form
    47,178.93/70,768.40 = 12,118.62/x
  3. Step 3: Cross multiply
    47,178.93x = 70,768.40 × 12,118.62
  4. Step 4: Simplify right side
    47,178.93x = 857,615,287.01
  5. Step 5: Solve for x
    x = 857,615,287.01/47,178.93
  6. Step 6: Final answer
    x = 18,177.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.