Home / 74,384.32-102,649.99-40,392.51

Finding the Fourth Proportional to 74,384.32, 102,649.99 and 40,392.51

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Solution

The fourth proportional to 74,384.32, 102,649.99 and 40,392.51 is: 55,741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,384.32 : 102,649.99 = 40,392.51 : x
  2. Step 2: Convert to fraction form
    74,384.32/102,649.99 = 40,392.51/x
  3. Step 3: Cross multiply
    74,384.32x = 102,649.99 × 40,392.51
  4. Step 4: Simplify right side
    74,384.32x = 4,146,290,747.57
  5. Step 5: Solve for x
    x = 4,146,290,747.57/74,384.32
  6. Step 6: Final answer
    x = 55,741.46

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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.