Home / 70,818.38-106,178.36-31,353.98

Finding the Fourth Proportional to 70,818.38, 106,178.36 and 31,353.98

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Solution

The fourth proportional to 70,818.38, 106,178.36 and 31,353.98 is: 47,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.38 : 106,178.36 = 31,353.98 : x
  2. Step 2: Convert to fraction form
    70,818.38/106,178.36 = 31,353.98/x
  3. Step 3: Cross multiply
    70,818.38x = 106,178.36 × 31,353.98
  4. Step 4: Simplify right side
    70,818.38x = 3,329,114,175.87
  5. Step 5: Solve for x
    x = 3,329,114,175.87/70,818.38
  6. Step 6: Final answer
    x = 47,009.18

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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.