Home / 113,661.28-170,457.36-39,772

Finding the Fourth Proportional to 113,661.28, 170,457.36 and 39,772

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Solution

The fourth proportional to 113,661.28, 170,457.36 and 39,772 is: 59,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,661.28 : 170,457.36 = 39,772 : x
  2. Step 2: Convert to fraction form
    113,661.28/170,457.36 = 39,772/x
  3. Step 3: Cross multiply
    113,661.28x = 170,457.36 × 39,772
  4. Step 4: Simplify right side
    113,661.28x = 6,779,430,121.92
  5. Step 5: Solve for x
    x = 6,779,430,121.92/113,661.28
  6. Step 6: Final answer
    x = 59,645.91

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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.