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Finding the Fourth Proportional to 66,014.40, 91,091.48 and 37,721.92

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Solution

The fourth proportional to 66,014.40, 91,091.48 and 37,721.92 is: 52,051.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,014.40 : 91,091.48 = 37,721.92 : x
  2. Step 2: Convert to fraction form
    66,014.40/91,091.48 = 37,721.92/x
  3. Step 3: Cross multiply
    66,014.40x = 91,091.48 × 37,721.92
  4. Step 4: Simplify right side
    66,014.40x = 3,436,145,521.24
  5. Step 5: Solve for x
    x = 3,436,145,521.24/66,014.40
  6. Step 6: Final answer
    x = 52,051.45

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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.