Home / 90,688.89-125,094.20-62,345.37

Finding the Fourth Proportional to 90,688.89, 125,094.20 and 62,345.37

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Solution

The fourth proportional to 90,688.89, 125,094.20 and 62,345.37 is: 85,997.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,688.89 : 125,094.20 = 62,345.37 : x
  2. Step 2: Convert to fraction form
    90,688.89/125,094.20 = 62,345.37/x
  3. Step 3: Cross multiply
    90,688.89x = 125,094.20 × 62,345.37
  4. Step 4: Simplify right side
    90,688.89x = 7,799,043,872.13
  5. Step 5: Solve for x
    x = 7,799,043,872.13/90,688.89
  6. Step 6: Final answer
    x = 85,997.79

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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.