Home / 70,280.06-105,346.64-30,803.90

Finding the Fourth Proportional to 70,280.06, 105,346.64 and 30,803.90

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Solution

The fourth proportional to 70,280.06, 105,346.64 and 30,803.90 is: 46,173.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,280.06 : 105,346.64 = 30,803.90 : x
  2. Step 2: Convert to fraction form
    70,280.06/105,346.64 = 30,803.90/x
  3. Step 3: Cross multiply
    70,280.06x = 105,346.64 × 30,803.90
  4. Step 4: Simplify right side
    70,280.06x = 3,245,087,363.90
  5. Step 5: Solve for x
    x = 3,245,087,363.90/70,280.06
  6. Step 6: Final answer
    x = 46,173.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.