Home / 70,897.11-106,345.36-20,977.52

Finding the Fourth Proportional to 70,897.11, 106,345.36 and 20,977.52

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Solution

The fourth proportional to 70,897.11, 106,345.36 and 20,977.52 is: 31,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,897.11 : 106,345.36 = 20,977.52 : x
  2. Step 2: Convert to fraction form
    70,897.11/106,345.36 = 20,977.52/x
  3. Step 3: Cross multiply
    70,897.11x = 106,345.36 × 20,977.52
  4. Step 4: Simplify right side
    70,897.11x = 2,230,861,811.42
  5. Step 5: Solve for x
    x = 2,230,861,811.42/70,897.11
  6. Step 6: Final answer
    x = 31,466.19

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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.