Home / 81,388.40-112,316.76-45,090.61

Finding the Fourth Proportional to 81,388.40, 112,316.76 and 45,090.61

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Solution

The fourth proportional to 81,388.40, 112,316.76 and 45,090.61 is: 62,225.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,388.40 : 112,316.76 = 45,090.61 : x
  2. Step 2: Convert to fraction form
    81,388.40/112,316.76 = 45,090.61/x
  3. Step 3: Cross multiply
    81,388.40x = 112,316.76 × 45,090.61
  4. Step 4: Simplify right side
    81,388.40x = 5,064,431,604.89
  5. Step 5: Solve for x
    x = 5,064,431,604.89/81,388.40
  6. Step 6: Final answer
    x = 62,225.48

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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.