Home / 78,853.23-118,316.57-39,413.07

Finding the Fourth Proportional to 78,853.23, 118,316.57 and 39,413.07

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Solution

The fourth proportional to 78,853.23, 118,316.57 and 39,413.07 is: 59,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,853.23 : 118,316.57 = 39,413.07 : x
  2. Step 2: Convert to fraction form
    78,853.23/118,316.57 = 39,413.07/x
  3. Step 3: Cross multiply
    78,853.23x = 118,316.57 × 39,413.07
  4. Step 4: Simplify right side
    78,853.23x = 4,663,219,058.50
  5. Step 5: Solve for x
    x = 4,663,219,058.50/78,853.23
  6. Step 6: Final answer
    x = 59,137.96

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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.