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Finding the Fourth Proportional to 58,408, 80,603.04 and 31,912

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Solution

The fourth proportional to 58,408, 80,603.04 and 31,912 is: 44,038.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,408 : 80,603.04 = 31,912 : x
  2. Step 2: Convert to fraction form
    58,408/80,603.04 = 31,912/x
  3. Step 3: Cross multiply
    58,408x = 80,603.04 × 31,912
  4. Step 4: Simplify right side
    58,408x = 2,572,204,212.48
  5. Step 5: Solve for x
    x = 2,572,204,212.48/58,408
  6. Step 6: Final answer
    x = 44,038.56

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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.