Home / 107,389.35-161,071.68-28,509.75

Finding the Fourth Proportional to 107,389.35, 161,071.68 and 28,509.75

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Solution

The fourth proportional to 107,389.35, 161,071.68 and 28,509.75 is: 42,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,389.35 : 161,071.68 = 28,509.75 : x
  2. Step 2: Convert to fraction form
    107,389.35/161,071.68 = 28,509.75/x
  3. Step 3: Cross multiply
    107,389.35x = 161,071.68 × 28,509.75
  4. Step 4: Simplify right side
    107,389.35x = 4,592,113,328.88
  5. Step 5: Solve for x
    x = 4,592,113,328.88/107,389.35
  6. Step 6: Final answer
    x = 42,761.35

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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.