Home / 76,548.90-105,688.89-68,457.36

Finding the Fourth Proportional to 76,548.90, 105,688.89 and 68,457.36

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Solution

The fourth proportional to 76,548.90, 105,688.89 and 68,457.36 is: 94,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,548.90 : 105,688.89 = 68,457.36 : x
  2. Step 2: Convert to fraction form
    76,548.90/105,688.89 = 68,457.36/x
  3. Step 3: Cross multiply
    76,548.90x = 105,688.89 × 68,457.36
  4. Step 4: Simplify right side
    76,548.90x = 7,235,182,390.73
  5. Step 5: Solve for x
    x = 7,235,182,390.73/76,548.90
  6. Step 6: Final answer
    x = 94,517.13

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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.