Home / 41,038.80-56,640.15-30,978.60

Finding the Fourth Proportional to 41,038.80, 56,640.15 and 30,978.60

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Solution

The fourth proportional to 41,038.80, 56,640.15 and 30,978.60 is: 42,755.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,038.80 : 56,640.15 = 30,978.60 : x
  2. Step 2: Convert to fraction form
    41,038.80/56,640.15 = 30,978.60/x
  3. Step 3: Cross multiply
    41,038.80x = 56,640.15 × 30,978.60
  4. Step 4: Simplify right side
    41,038.80x = 1,754,632,550.79
  5. Step 5: Solve for x
    x = 1,754,632,550.79/41,038.80
  6. Step 6: Final answer
    x = 42,755.45

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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.