Home / 75,270.72-103,840-48,408.16

Finding the Fourth Proportional to 75,270.72, 103,840 and 48,408.16

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Solution

The fourth proportional to 75,270.72, 103,840 and 48,408.16 is: 66,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,270.72 : 103,840 = 48,408.16 : x
  2. Step 2: Convert to fraction form
    75,270.72/103,840 = 48,408.16/x
  3. Step 3: Cross multiply
    75,270.72x = 103,840 × 48,408.16
  4. Step 4: Simplify right side
    75,270.72x = 5,026,703,334.40
  5. Step 5: Solve for x
    x = 5,026,703,334.40/75,270.72
  6. Step 6: Final answer
    x = 66,781.66

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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.