Home / 42,312.20-58,409.78-30,433.80

Finding the Fourth Proportional to 42,312.20, 58,409.78 and 30,433.80

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Solution

The fourth proportional to 42,312.20, 58,409.78 and 30,433.80 is: 42,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,312.20 : 58,409.78 = 30,433.80 : x
  2. Step 2: Convert to fraction form
    42,312.20/58,409.78 = 30,433.80/x
  3. Step 3: Cross multiply
    42,312.20x = 58,409.78 × 30,433.80
  4. Step 4: Simplify right side
    42,312.20x = 1,777,631,562.56
  5. Step 5: Solve for x
    x = 1,777,631,562.56/42,312.20
  6. Step 6: Final answer
    x = 42,012.27

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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.