Home / 81,764.07-112,869.02-76,656.74

Finding the Fourth Proportional to 81,764.07, 112,869.02 and 76,656.74

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Solution

The fourth proportional to 81,764.07, 112,869.02 and 76,656.74 is: 105,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,764.07 : 112,869.02 = 76,656.74 : x
  2. Step 2: Convert to fraction form
    81,764.07/112,869.02 = 76,656.74/x
  3. Step 3: Cross multiply
    81,764.07x = 112,869.02 × 76,656.74
  4. Step 4: Simplify right side
    81,764.07x = 8,652,171,325.50
  5. Step 5: Solve for x
    x = 8,652,171,325.50/81,764.07
  6. Step 6: Final answer
    x = 105,818.75

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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.