Home / 76,726.44-105,911.28-56,744.15

Finding the Fourth Proportional to 76,726.44, 105,911.28 and 56,744.15

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Solution

The fourth proportional to 76,726.44, 105,911.28 and 56,744.15 is: 78,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,726.44 : 105,911.28 = 56,744.15 : x
  2. Step 2: Convert to fraction form
    76,726.44/105,911.28 = 56,744.15/x
  3. Step 3: Cross multiply
    76,726.44x = 105,911.28 × 56,744.15
  4. Step 4: Simplify right side
    76,726.44x = 6,009,845,029.46
  5. Step 5: Solve for x
    x = 6,009,845,029.46/76,726.44
  6. Step 6: Final answer
    x = 78,328.21

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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.