Home / 90,985.70-136,413.92-34,778.46

Finding the Fourth Proportional to 90,985.70, 136,413.92 and 34,778.46

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Solution

The fourth proportional to 90,985.70, 136,413.92 and 34,778.46 is: 52,142.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985.70 : 136,413.92 = 34,778.46 : x
  2. Step 2: Convert to fraction form
    90,985.70/136,413.92 = 34,778.46/x
  3. Step 3: Cross multiply
    90,985.70x = 136,413.92 × 34,778.46
  4. Step 4: Simplify right side
    90,985.70x = 4,744,266,060.16
  5. Step 5: Solve for x
    x = 4,744,266,060.16/90,985.70
  6. Step 6: Final answer
    x = 52,142.99

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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.