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Finding the Fourth Proportional to 62,164.36, 85,728.90 and 40,906.72

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Solution

The fourth proportional to 62,164.36, 85,728.90 and 40,906.72 is: 56,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,164.36 : 85,728.90 = 40,906.72 : x
  2. Step 2: Convert to fraction form
    62,164.36/85,728.90 = 40,906.72/x
  3. Step 3: Cross multiply
    62,164.36x = 85,728.90 × 40,906.72
  4. Step 4: Simplify right side
    62,164.36x = 3,506,888,108.21
  5. Step 5: Solve for x
    x = 3,506,888,108.21/62,164.36
  6. Step 6: Final answer
    x = 56,413.16

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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.