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Finding the Fourth Proportional to 98,905, 148,376.10 and 39,745.36

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Solution

The fourth proportional to 98,905, 148,376.10 and 39,745.36 is: 59,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,905 : 148,376.10 = 39,745.36 : x
  2. Step 2: Convert to fraction form
    98,905/148,376.10 = 39,745.36/x
  3. Step 3: Cross multiply
    98,905x = 148,376.10 × 39,745.36
  4. Step 4: Simplify right side
    98,905x = 5,897,261,509.90
  5. Step 5: Solve for x
    x = 5,897,261,509.90/98,905
  6. Step 6: Final answer
    x = 59,625.51

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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.