Home / 76,489.43-105,554.65-42,497.18

Finding the Fourth Proportional to 76,489.43, 105,554.65 and 42,497.18

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Solution

The fourth proportional to 76,489.43, 105,554.65 and 42,497.18 is: 58,645.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,489.43 : 105,554.65 = 42,497.18 : x
  2. Step 2: Convert to fraction form
    76,489.43/105,554.65 = 42,497.18/x
  3. Step 3: Cross multiply
    76,489.43x = 105,554.65 × 42,497.18
  4. Step 4: Simplify right side
    76,489.43x = 4,485,774,960.89
  5. Step 5: Solve for x
    x = 4,485,774,960.89/76,489.43
  6. Step 6: Final answer
    x = 58,645.68

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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.