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Finding the Fourth Proportional to 66,678.72, 92,015.52 and 36,870.72

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Solution

The fourth proportional to 66,678.72, 92,015.52 and 36,870.72 is: 50,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,678.72 : 92,015.52 = 36,870.72 : x
  2. Step 2: Convert to fraction form
    66,678.72/92,015.52 = 36,870.72/x
  3. Step 3: Cross multiply
    66,678.72x = 92,015.52 × 36,870.72
  4. Step 4: Simplify right side
    66,678.72x = 3,392,678,473.57
  5. Step 5: Solve for x
    x = 3,392,678,473.57/66,678.72
  6. Step 6: Final answer
    x = 50,880.98

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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.