Home / 76,355.34-105,366.80-42,363.47

Finding the Fourth Proportional to 76,355.34, 105,366.80 and 42,363.47

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Solution

The fourth proportional to 76,355.34, 105,366.80 and 42,363.47 is: 58,459.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,355.34 : 105,366.80 = 42,363.47 : x
  2. Step 2: Convert to fraction form
    76,355.34/105,366.80 = 42,363.47/x
  3. Step 3: Cross multiply
    76,355.34x = 105,366.80 × 42,363.47
  4. Step 4: Simplify right side
    76,355.34x = 4,463,703,270.80
  5. Step 5: Solve for x
    x = 4,463,703,270.80/76,355.34
  6. Step 6: Final answer
    x = 58,459.61

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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.