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Finding the Fourth Proportional to 66,718.72, 92,078.08 and 36,920.32

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Solution

The fourth proportional to 66,718.72, 92,078.08 and 36,920.32 is: 50,953.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,718.72 : 92,078.08 = 36,920.32 : x
  2. Step 2: Convert to fraction form
    66,718.72/92,078.08 = 36,920.32/x
  3. Step 3: Cross multiply
    66,718.72x = 92,078.08 × 36,920.32
  4. Step 4: Simplify right side
    66,718.72x = 3,399,552,178.59
  5. Step 5: Solve for x
    x = 3,399,552,178.59/66,718.72
  6. Step 6: Final answer
    x = 50,953.50

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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.