Home / 74,113.49-102,276.59-40,121.96

Finding the Fourth Proportional to 74,113.49, 102,276.59 and 40,121.96

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Solution

The fourth proportional to 74,113.49, 102,276.59 and 40,121.96 is: 55,368.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,113.49 : 102,276.59 = 40,121.96 : x
  2. Step 2: Convert to fraction form
    74,113.49/102,276.59 = 40,121.96/x
  3. Step 3: Cross multiply
    74,113.49x = 102,276.59 × 40,121.96
  4. Step 4: Simplify right side
    74,113.49x = 4,103,536,741.53
  5. Step 5: Solve for x
    x = 4,103,536,741.53/74,113.49
  6. Step 6: Final answer
    x = 55,368.28

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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.