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Finding the Fourth Proportional to 66,032.80, 98,903.40 and 42,413.20

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Solution

The fourth proportional to 66,032.80, 98,903.40 and 42,413.20 is: 63,526.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,032.80 : 98,903.40 = 42,413.20 : x
  2. Step 2: Convert to fraction form
    66,032.80/98,903.40 = 42,413.20/x
  3. Step 3: Cross multiply
    66,032.80x = 98,903.40 × 42,413.20
  4. Step 4: Simplify right side
    66,032.80x = 4,194,809,684.88
  5. Step 5: Solve for x
    x = 4,194,809,684.88/66,032.80
  6. Step 6: Final answer
    x = 63,526.15

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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.