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Finding the Fourth Proportional to 78,000.60, 116,828.10 and 60,413.40

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Solution

The fourth proportional to 78,000.60, 116,828.10 and 60,413.40 is: 90,486.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.60 : 116,828.10 = 60,413.40 : x
  2. Step 2: Convert to fraction form
    78,000.60/116,828.10 = 60,413.40/x
  3. Step 3: Cross multiply
    78,000.60x = 116,828.10 × 60,413.40
  4. Step 4: Simplify right side
    78,000.60x = 7,057,982,736.54
  5. Step 5: Solve for x
    x = 7,057,982,736.54/78,000.60
  6. Step 6: Final answer
    x = 90,486.26

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1.5x scale

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.