Home / 66,732.69-92,082-39,869.49

Finding the Fourth Proportional to 66,732.69, 92,082 and 39,869.49

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Solution

The fourth proportional to 66,732.69, 92,082 and 39,869.49 is: 55,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,732.69 : 92,082 = 39,869.49 : x
  2. Step 2: Convert to fraction form
    66,732.69/92,082 = 39,869.49/x
  3. Step 3: Cross multiply
    66,732.69x = 92,082 × 39,869.49
  4. Step 4: Simplify right side
    66,732.69x = 3,671,262,378.18
  5. Step 5: Solve for x
    x = 3,671,262,378.18/66,732.69
  6. Step 6: Final answer
    x = 55,014.45

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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.