Home / 74,905.76-103,370.78-40,915.23

Finding the Fourth Proportional to 74,905.76, 103,370.78 and 40,915.23

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Solution

The fourth proportional to 74,905.76, 103,370.78 and 40,915.23 is: 56,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,905.76 : 103,370.78 = 40,915.23 : x
  2. Step 2: Convert to fraction form
    74,905.76/103,370.78 = 40,915.23/x
  3. Step 3: Cross multiply
    74,905.76x = 103,370.78 × 40,915.23
  4. Step 4: Simplify right side
    74,905.76x = 4,229,438,953.63
  5. Step 5: Solve for x
    x = 4,229,438,953.63/74,905.76
  6. Step 6: Final answer
    x = 56,463.47

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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.