Home / 42,148.34-63,239.52-18,758.78

Finding the Fourth Proportional to 42,148.34, 63,239.52 and 18,758.78

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Solution

The fourth proportional to 42,148.34, 63,239.52 and 18,758.78 is: 28,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,148.34 : 63,239.52 = 18,758.78 : x
  2. Step 2: Convert to fraction form
    42,148.34/63,239.52 = 18,758.78/x
  3. Step 3: Cross multiply
    42,148.34x = 63,239.52 × 18,758.78
  4. Step 4: Simplify right side
    42,148.34x = 1,186,296,242.99
  5. Step 5: Solve for x
    x = 1,186,296,242.99/42,148.34
  6. Step 6: Final answer
    x = 28,145.74

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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.