Home / 68,128.34-102,148.76-47,009.21

Finding the Fourth Proportional to 68,128.34, 102,148.76 and 47,009.21

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Solution

The fourth proportional to 68,128.34, 102,148.76 and 47,009.21 is: 70,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.34 : 102,148.76 = 47,009.21 : x
  2. Step 2: Convert to fraction form
    68,128.34/102,148.76 = 47,009.21/x
  3. Step 3: Cross multiply
    68,128.34x = 102,148.76 × 47,009.21
  4. Step 4: Simplify right side
    68,128.34x = 4,801,932,116.86
  5. Step 5: Solve for x
    x = 4,801,932,116.86/68,128.34
  6. Step 6: Final answer
    x = 70,483.63

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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.