Home / 78,056.63-107,718.94-42,247.41

Finding the Fourth Proportional to 78,056.63, 107,718.94 and 42,247.41

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Solution

The fourth proportional to 78,056.63, 107,718.94 and 42,247.41 is: 58,301.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,056.63 : 107,718.94 = 42,247.41 : x
  2. Step 2: Convert to fraction form
    78,056.63/107,718.94 = 42,247.41/x
  3. Step 3: Cross multiply
    78,056.63x = 107,718.94 × 42,247.41
  4. Step 4: Simplify right side
    78,056.63x = 4,550,846,275.75
  5. Step 5: Solve for x
    x = 4,550,846,275.75/78,056.63
  6. Step 6: Final answer
    x = 58,301.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.