Home / 70,828.71-106,254.61-20,913.85

Finding the Fourth Proportional to 70,828.71, 106,254.61 and 20,913.85

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Solution

The fourth proportional to 70,828.71, 106,254.61 and 20,913.85 is: 31,374.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.71 : 106,254.61 = 20,913.85 : x
  2. Step 2: Convert to fraction form
    70,828.71/106,254.61 = 20,913.85/x
  3. Step 3: Cross multiply
    70,828.71x = 106,254.61 × 20,913.85
  4. Step 4: Simplify right side
    70,828.71x = 2,222,192,339.51
  5. Step 5: Solve for x
    x = 2,222,192,339.51/70,828.71
  6. Step 6: Final answer
    x = 31,374.17

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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.