Home / 107,389.47-161,071.70-28,509.83

Finding the Fourth Proportional to 107,389.47, 161,071.70 and 28,509.83

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Solution

The fourth proportional to 107,389.47, 161,071.70 and 28,509.83 is: 42,761.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,389.47 : 161,071.70 = 28,509.83 : x
  2. Step 2: Convert to fraction form
    107,389.47/161,071.70 = 28,509.83/x
  3. Step 3: Cross multiply
    107,389.47x = 161,071.70 × 28,509.83
  4. Step 4: Simplify right side
    107,389.47x = 4,592,125,836.90
  5. Step 5: Solve for x
    x = 4,592,125,836.90/107,389.47
  6. Step 6: Final answer
    x = 42,761.42

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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.