Home / 85,823.82-118,430.34-48,090.78

Finding the Fourth Proportional to 85,823.82, 118,430.34 and 48,090.78

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Solution

The fourth proportional to 85,823.82, 118,430.34 and 48,090.78 is: 66,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,823.82 : 118,430.34 = 48,090.78 : x
  2. Step 2: Convert to fraction form
    85,823.82/118,430.34 = 48,090.78/x
  3. Step 3: Cross multiply
    85,823.82x = 118,430.34 × 48,090.78
  4. Step 4: Simplify right side
    85,823.82x = 5,695,407,426.27
  5. Step 5: Solve for x
    x = 5,695,407,426.27/85,823.82
  6. Step 6: Final answer
    x = 66,361.62

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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.