Home / 63,128.21-87,148.47-39,262.58

Finding the Fourth Proportional to 63,128.21, 87,148.47 and 39,262.58

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Solution

The fourth proportional to 63,128.21, 87,148.47 and 39,262.58 is: 54,201.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,128.21 : 87,148.47 = 39,262.58 : x
  2. Step 2: Convert to fraction form
    63,128.21/87,148.47 = 39,262.58/x
  3. Step 3: Cross multiply
    63,128.21x = 87,148.47 × 39,262.58
  4. Step 4: Simplify right side
    63,128.21x = 3,421,673,775.25
  5. Step 5: Solve for x
    x = 3,421,673,775.25/63,128.21
  6. Step 6: Final answer
    x = 54,201.98

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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.