Home / 76,329.12-105,331.62-42,337.44

Finding the Fourth Proportional to 76,329.12, 105,331.62 and 42,337.44

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Solution

The fourth proportional to 76,329.12, 105,331.62 and 42,337.44 is: 58,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,329.12 : 105,331.62 = 42,337.44 : x
  2. Step 2: Convert to fraction form
    76,329.12/105,331.62 = 42,337.44/x
  3. Step 3: Cross multiply
    76,329.12x = 105,331.62 × 42,337.44
  4. Step 4: Simplify right side
    76,329.12x = 4,459,471,141.85
  5. Step 5: Solve for x
    x = 4,459,471,141.85/76,329.12
  6. Step 6: Final answer
    x = 58,424.24

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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.