Home / 76,276.12-105,251.31-42,284.30

Finding the Fourth Proportional to 76,276.12, 105,251.31 and 42,284.30

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Solution

The fourth proportional to 76,276.12, 105,251.31 and 42,284.30 is: 58,346.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,276.12 : 105,251.31 = 42,284.30 : x
  2. Step 2: Convert to fraction form
    76,276.12/105,251.31 = 42,284.30/x
  3. Step 3: Cross multiply
    76,276.12x = 105,251.31 × 42,284.30
  4. Step 4: Simplify right side
    76,276.12x = 4,450,477,722.65
  5. Step 5: Solve for x
    x = 4,450,477,722.65/76,276.12
  6. Step 6: Final answer
    x = 58,346.93

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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.