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Finding the Fourth Proportional to 76,344.54, 105,355.73 and 42,353.70

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Solution

The fourth proportional to 76,344.54, 105,355.73 and 42,353.70 is: 58,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,344.54 : 105,355.73 = 42,353.70 : x
  2. Step 2: Convert to fraction form
    76,344.54/105,355.73 = 42,353.70/x
  3. Step 3: Cross multiply
    76,344.54x = 105,355.73 × 42,353.70
  4. Step 4: Simplify right side
    76,344.54x = 4,462,205,087.59
  5. Step 5: Solve for x
    x = 4,462,205,087.59/76,344.54
  6. Step 6: Final answer
    x = 58,448.25

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1.5x scale

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.