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Finding the Fourth Proportional to 79,413.84, 109,599.78 and 45,425.40

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Solution

The fourth proportional to 79,413.84, 109,599.78 and 45,425.40 is: 62,692.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,413.84 : 109,599.78 = 45,425.40 : x
  2. Step 2: Convert to fraction form
    79,413.84/109,599.78 = 45,425.40/x
  3. Step 3: Cross multiply
    79,413.84x = 109,599.78 × 45,425.40
  4. Step 4: Simplify right side
    79,413.84x = 4,978,613,846.41
  5. Step 5: Solve for x
    x = 4,978,613,846.41/79,413.84
  6. Step 6: Final answer
    x = 62,692.02

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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.