Home / 47,001.92-70,521.32-20,688.20

Finding the Fourth Proportional to 47,001.92, 70,521.32 and 20,688.20

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Solution

The fourth proportional to 47,001.92, 70,521.32 and 20,688.20 is: 31,040.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,001.92 : 70,521.32 = 20,688.20 : x
  2. Step 2: Convert to fraction form
    47,001.92/70,521.32 = 20,688.20/x
  3. Step 3: Cross multiply
    47,001.92x = 70,521.32 × 20,688.20
  4. Step 4: Simplify right side
    47,001.92x = 1,458,959,172.42
  5. Step 5: Solve for x
    x = 1,458,959,172.42/47,001.92
  6. Step 6: Final answer
    x = 31,040.42

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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.