Home / 77,044.77-115,574.85-20,885.78

Finding the Fourth Proportional to 77,044.77, 115,574.85 and 20,885.78

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Solution

The fourth proportional to 77,044.77, 115,574.85 and 20,885.78 is: 31,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,044.77 : 115,574.85 = 20,885.78 : x
  2. Step 2: Convert to fraction form
    77,044.77/115,574.85 = 20,885.78/x
  3. Step 3: Cross multiply
    77,044.77x = 115,574.85 × 20,885.78
  4. Step 4: Simplify right side
    77,044.77x = 2,413,871,179.57
  5. Step 5: Solve for x
    x = 2,413,871,179.57/77,044.77
  6. Step 6: Final answer
    x = 31,330.76

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1.5x scale

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.