Home / 78,943.18-118,413.10-25,635.10

Finding the Fourth Proportional to 78,943.18, 118,413.10 and 25,635.10

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Solution

The fourth proportional to 78,943.18, 118,413.10 and 25,635.10 is: 38,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.18 : 118,413.10 = 25,635.10 : x
  2. Step 2: Convert to fraction form
    78,943.18/118,413.10 = 25,635.10/x
  3. Step 3: Cross multiply
    78,943.18x = 118,413.10 × 25,635.10
  4. Step 4: Simplify right side
    78,943.18x = 3,035,531,659.81
  5. Step 5: Solve for x
    x = 3,035,531,659.81/78,943.18
  6. Step 6: Final answer
    x = 38,452.11

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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.