Home / 74,664.45-103,036.01-40,672.80

Finding the Fourth Proportional to 74,664.45, 103,036.01 and 40,672.80

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Solution

The fourth proportional to 74,664.45, 103,036.01 and 40,672.80 is: 56,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,664.45 : 103,036.01 = 40,672.80 : x
  2. Step 2: Convert to fraction form
    74,664.45/103,036.01 = 40,672.80/x
  3. Step 3: Cross multiply
    74,664.45x = 103,036.01 × 40,672.80
  4. Step 4: Simplify right side
    74,664.45x = 4,190,762,824.16
  5. Step 5: Solve for x
    x = 4,190,762,824.16/74,664.45
  6. Step 6: Final answer
    x = 56,127.95

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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.