Home / 56,828.64-78,425.76-31,679.76

Finding the Fourth Proportional to 56,828.64, 78,425.76 and 31,679.76

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Solution

The fourth proportional to 56,828.64, 78,425.76 and 31,679.76 is: 43,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,828.64 : 78,425.76 = 31,679.76 : x
  2. Step 2: Convert to fraction form
    56,828.64/78,425.76 = 31,679.76/x
  3. Step 3: Cross multiply
    56,828.64x = 78,425.76 × 31,679.76
  4. Step 4: Simplify right side
    56,828.64x = 2,484,509,254.62
  5. Step 5: Solve for x
    x = 2,484,509,254.62/56,828.64
  6. Step 6: Final answer
    x = 43,719.32

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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.