Home / 76,318.20-105,320.05-42,327.36

Finding the Fourth Proportional to 76,318.20, 105,320.05 and 42,327.36

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Solution

The fourth proportional to 76,318.20, 105,320.05 and 42,327.36 is: 58,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,318.20 : 105,320.05 = 42,327.36 : x
  2. Step 2: Convert to fraction form
    76,318.20/105,320.05 = 42,327.36/x
  3. Step 3: Cross multiply
    76,318.20x = 105,320.05 × 42,327.36
  4. Step 4: Simplify right side
    76,318.20x = 4,457,919,565.75
  5. Step 5: Solve for x
    x = 4,457,919,565.75/76,318.20
  6. Step 6: Final answer
    x = 58,412.27

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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.