Home / 72,491.48-100,037.78-40,660.36

Finding the Fourth Proportional to 72,491.48, 100,037.78 and 40,660.36

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Solution

The fourth proportional to 72,491.48, 100,037.78 and 40,660.36 is: 56,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,491.48 : 100,037.78 = 40,660.36 : x
  2. Step 2: Convert to fraction form
    72,491.48/100,037.78 = 40,660.36/x
  3. Step 3: Cross multiply
    72,491.48x = 100,037.78 × 40,660.36
  4. Step 4: Simplify right side
    72,491.48x = 4,067,572,148.40
  5. Step 5: Solve for x
    x = 4,067,572,148.40/72,491.48
  6. Step 6: Final answer
    x = 56,111.04

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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.