Home / 68,125.86-102,176.63-20,729.47

Finding the Fourth Proportional to 68,125.86, 102,176.63 and 20,729.47

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Solution

The fourth proportional to 68,125.86, 102,176.63 and 20,729.47 is: 31,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,125.86 : 102,176.63 = 20,729.47 : x
  2. Step 2: Convert to fraction form
    68,125.86/102,176.63 = 20,729.47/x
  3. Step 3: Cross multiply
    68,125.86x = 102,176.63 × 20,729.47
  4. Step 4: Simplify right side
    68,125.86x = 2,118,066,875.40
  5. Step 5: Solve for x
    x = 2,118,066,875.40/68,125.86
  6. Step 6: Final answer
    x = 31,090.50

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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.