Home / 76,286.08-105,281.02-42,305.22

Finding the Fourth Proportional to 76,286.08, 105,281.02 and 42,305.22

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Solution

The fourth proportional to 76,286.08, 105,281.02 and 42,305.22 is: 58,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,286.08 : 105,281.02 = 42,305.22 : x
  2. Step 2: Convert to fraction form
    76,286.08/105,281.02 = 42,305.22/x
  3. Step 3: Cross multiply
    76,286.08x = 105,281.02 × 42,305.22
  4. Step 4: Simplify right side
    76,286.08x = 4,453,936,712.92
  5. Step 5: Solve for x
    x = 4,453,936,712.92/76,286.08
  6. Step 6: Final answer
    x = 58,384.66

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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.