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Finding the Fourth Proportional to 65,871.36, 98,776.80 and 28,413.48

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Solution

The fourth proportional to 65,871.36, 98,776.80 and 28,413.48 is: 42,607.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871.36 : 98,776.80 = 28,413.48 : x
  2. Step 2: Convert to fraction form
    65,871.36/98,776.80 = 28,413.48/x
  3. Step 3: Cross multiply
    65,871.36x = 98,776.80 × 28,413.48
  4. Step 4: Simplify right side
    65,871.36x = 2,806,592,631.26
  5. Step 5: Solve for x
    x = 2,806,592,631.26/65,871.36
  6. Step 6: Final answer
    x = 42,607.18

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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.