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Finding the Fourth Proportional to 42,577.80, 63,866.70 and 11,413.05

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Solution

The fourth proportional to 42,577.80, 63,866.70 and 11,413.05 is: 17,119.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,577.80 : 63,866.70 = 11,413.05 : x
  2. Step 2: Convert to fraction form
    42,577.80/63,866.70 = 11,413.05/x
  3. Step 3: Cross multiply
    42,577.80x = 63,866.70 × 11,413.05
  4. Step 4: Simplify right side
    42,577.80x = 728,913,840.44
  5. Step 5: Solve for x
    x = 728,913,840.44/42,577.80
  6. Step 6: Final answer
    x = 17,119.58

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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.