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Finding the Fourth Proportional to 66,888.32, 92,315.39 and 41,402.88

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Solution

The fourth proportional to 66,888.32, 92,315.39 and 41,402.88 is: 57,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,888.32 : 92,315.39 = 41,402.88 : x
  2. Step 2: Convert to fraction form
    66,888.32/92,315.39 = 41,402.88/x
  3. Step 3: Cross multiply
    66,888.32x = 92,315.39 × 41,402.88
  4. Step 4: Simplify right side
    66,888.32x = 3,822,122,807.31
  5. Step 5: Solve for x
    x = 3,822,122,807.31/66,888.32
  6. Step 6: Final answer
    x = 57,141.86

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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.