Home / 101,031.38-139,395.96-57,423.32

Finding the Fourth Proportional to 101,031.38, 139,395.96 and 57,423.32

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Solution

The fourth proportional to 101,031.38, 139,395.96 and 57,423.32 is: 79,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,031.38 : 139,395.96 = 57,423.32 : x
  2. Step 2: Convert to fraction form
    101,031.38/139,395.96 = 57,423.32/x
  3. Step 3: Cross multiply
    101,031.38x = 139,395.96 × 57,423.32
  4. Step 4: Simplify right side
    101,031.38x = 8,004,578,817.79
  5. Step 5: Solve for x
    x = 8,004,578,817.79/101,031.38
  6. Step 6: Final answer
    x = 79,228.64

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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.