Home / 66,729.14-92,083.47-39,886.45

Finding the Fourth Proportional to 66,729.14, 92,083.47 and 39,886.45

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Solution

The fourth proportional to 66,729.14, 92,083.47 and 39,886.45 is: 55,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,729.14 : 92,083.47 = 39,886.45 : x
  2. Step 2: Convert to fraction form
    66,729.14/92,083.47 = 39,886.45/x
  3. Step 3: Cross multiply
    66,729.14x = 92,083.47 × 39,886.45
  4. Step 4: Simplify right side
    66,729.14x = 3,672,882,721.98
  5. Step 5: Solve for x
    x = 3,672,882,721.98/66,729.14
  6. Step 6: Final answer
    x = 55,041.66

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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.