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Finding the Fourth Proportional to 66,411.24, 91,647.78 and 36,603.24

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Solution

The fourth proportional to 66,411.24, 91,647.78 and 36,603.24 is: 50,512.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.24 : 91,647.78 = 36,603.24 : x
  2. Step 2: Convert to fraction form
    66,411.24/91,647.78 = 36,603.24/x
  3. Step 3: Cross multiply
    66,411.24x = 91,647.78 × 36,603.24
  4. Step 4: Simplify right side
    66,411.24x = 3,354,605,686.81
  5. Step 5: Solve for x
    x = 3,354,605,686.81/66,411.24
  6. Step 6: Final answer
    x = 50,512.62

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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.