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Finding the Fourth Proportional to 52,413.78, 72,328.86 and 28,540.40

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Solution

The fourth proportional to 52,413.78, 72,328.86 and 28,540.40 is: 39,384.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,413.78 : 72,328.86 = 28,540.40 : x
  2. Step 2: Convert to fraction form
    52,413.78/72,328.86 = 28,540.40/x
  3. Step 3: Cross multiply
    52,413.78x = 72,328.86 × 28,540.40
  4. Step 4: Simplify right side
    52,413.78x = 2,064,294,595.94
  5. Step 5: Solve for x
    x = 2,064,294,595.94/52,413.78
  6. Step 6: Final answer
    x = 39,384.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.