Home / 74,976.57-112,409.19-45,387.45

Finding the Fourth Proportional to 74,976.57, 112,409.19 and 45,387.45

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Solution

The fourth proportional to 74,976.57, 112,409.19 and 45,387.45 is: 68,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,976.57 : 112,409.19 = 45,387.45 : x
  2. Step 2: Convert to fraction form
    74,976.57/112,409.19 = 45,387.45/x
  3. Step 3: Cross multiply
    74,976.57x = 112,409.19 × 45,387.45
  4. Step 4: Simplify right side
    74,976.57x = 5,101,966,490.67
  5. Step 5: Solve for x
    x = 5,101,966,490.67/74,976.57
  6. Step 6: Final answer
    x = 68,047.48

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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.