Home / 42,898.02-64,360.40-20,707.54

Finding the Fourth Proportional to 42,898.02, 64,360.40 and 20,707.54

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Solution

The fourth proportional to 42,898.02, 64,360.40 and 20,707.54 is: 31,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,898.02 : 64,360.40 = 20,707.54 : x
  2. Step 2: Convert to fraction form
    42,898.02/64,360.40 = 20,707.54/x
  3. Step 3: Cross multiply
    42,898.02x = 64,360.40 × 20,707.54
  4. Step 4: Simplify right side
    42,898.02x = 1,332,745,557.42
  5. Step 5: Solve for x
    x = 1,332,745,557.42/42,898.02
  6. Step 6: Final answer
    x = 31,067.76

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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.