Home / 66,869.83-92,281.40-40,013.47

Finding the Fourth Proportional to 66,869.83, 92,281.40 and 40,013.47

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Solution

The fourth proportional to 66,869.83, 92,281.40 and 40,013.47 is: 55,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.83 : 92,281.40 = 40,013.47 : x
  2. Step 2: Convert to fraction form
    66,869.83/92,281.40 = 40,013.47/x
  3. Step 3: Cross multiply
    66,869.83x = 92,281.40 × 40,013.47
  4. Step 4: Simplify right side
    66,869.83x = 3,692,499,030.46
  5. Step 5: Solve for x
    x = 3,692,499,030.46/66,869.83
  6. Step 6: Final answer
    x = 55,219.21

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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.