Home / 104,977.45-157,420-38,400.31

Finding the Fourth Proportional to 104,977.45, 157,420 and 38,400.31

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Solution

The fourth proportional to 104,977.45, 157,420 and 38,400.31 is: 57,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,977.45 : 157,420 = 38,400.31 : x
  2. Step 2: Convert to fraction form
    104,977.45/157,420 = 38,400.31/x
  3. Step 3: Cross multiply
    104,977.45x = 157,420 × 38,400.31
  4. Step 4: Simplify right side
    104,977.45x = 6,044,976,800.20
  5. Step 5: Solve for x
    x = 6,044,976,800.20/104,977.45
  6. Step 6: Final answer
    x = 57,583.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.