Home / 89,413.20-133,901.10-42,611.40

Finding the Fourth Proportional to 89,413.20, 133,901.10 and 42,611.40

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Solution

The fourth proportional to 89,413.20, 133,901.10 and 42,611.40 is: 63,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,413.20 : 133,901.10 = 42,611.40 : x
  2. Step 2: Convert to fraction form
    89,413.20/133,901.10 = 42,611.40/x
  3. Step 3: Cross multiply
    89,413.20x = 133,901.10 × 42,611.40
  4. Step 4: Simplify right side
    89,413.20x = 5,705,713,332.54
  5. Step 5: Solve for x
    x = 5,705,713,332.54/89,413.20
  6. Step 6: Final answer
    x = 63,812.87

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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.