Home / 70,541.76-105,840.19-31,071.21

Finding the Fourth Proportional to 70,541.76, 105,840.19 and 31,071.21

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Solution

The fourth proportional to 70,541.76, 105,840.19 and 31,071.21 is: 46,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,541.76 : 105,840.19 = 31,071.21 : x
  2. Step 2: Convert to fraction form
    70,541.76/105,840.19 = 31,071.21/x
  3. Step 3: Cross multiply
    70,541.76x = 105,840.19 × 31,071.21
  4. Step 4: Simplify right side
    70,541.76x = 3,288,582,769.93
  5. Step 5: Solve for x
    x = 3,288,582,769.93/70,541.76
  6. Step 6: Final answer
    x = 46,618.95

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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.