Home / 76,295.15-105,286.21-42,303.70

Finding the Fourth Proportional to 76,295.15, 105,286.21 and 42,303.70

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Solution

The fourth proportional to 76,295.15, 105,286.21 and 42,303.70 is: 58,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,295.15 : 105,286.21 = 42,303.70 : x
  2. Step 2: Convert to fraction form
    76,295.15/105,286.21 = 42,303.70/x
  3. Step 3: Cross multiply
    76,295.15x = 105,286.21 × 42,303.70
  4. Step 4: Simplify right side
    76,295.15x = 4,453,996,241.98
  5. Step 5: Solve for x
    x = 4,453,996,241.98/76,295.15
  6. Step 6: Final answer
    x = 58,378.50

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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.