Home / 60,721.20-91,099.65-31,159.68

Finding the Fourth Proportional to 60,721.20, 91,099.65 and 31,159.68

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Solution

The fourth proportional to 60,721.20, 91,099.65 and 31,159.68 is: 46,748.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.20 : 91,099.65 = 31,159.68 : x
  2. Step 2: Convert to fraction form
    60,721.20/91,099.65 = 31,159.68/x
  3. Step 3: Cross multiply
    60,721.20x = 91,099.65 × 31,159.68
  4. Step 4: Simplify right side
    60,721.20x = 2,838,635,942.11
  5. Step 5: Solve for x
    x = 2,838,635,942.11/60,721.20
  6. Step 6: Final answer
    x = 46,748.68

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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.