Home / 81,429.45-121,963.72-62,570.67

Finding the Fourth Proportional to 81,429.45, 121,963.72 and 62,570.67

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Solution

The fourth proportional to 81,429.45, 121,963.72 and 62,570.67 is: 93,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.45 : 121,963.72 = 62,570.67 : x
  2. Step 2: Convert to fraction form
    81,429.45/121,963.72 = 62,570.67/x
  3. Step 3: Cross multiply
    81,429.45x = 121,963.72 × 62,570.67
  4. Step 4: Simplify right side
    81,429.45x = 7,631,351,676.09
  5. Step 5: Solve for x
    x = 7,631,351,676.09/81,429.45
  6. Step 6: Final answer
    x = 93,717.34

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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.