Home / 85,363.48-128,110.56-38,649.16

Finding the Fourth Proportional to 85,363.48, 128,110.56 and 38,649.16

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Solution

The fourth proportional to 85,363.48, 128,110.56 and 38,649.16 is: 58,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.48 : 128,110.56 = 38,649.16 : x
  2. Step 2: Convert to fraction form
    85,363.48/128,110.56 = 38,649.16/x
  3. Step 3: Cross multiply
    85,363.48x = 128,110.56 × 38,649.16
  4. Step 4: Simplify right side
    85,363.48x = 4,951,365,531.13
  5. Step 5: Solve for x
    x = 4,951,365,531.13/85,363.48
  6. Step 6: Final answer
    x = 58,003.32

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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.