Home / 55,378.86-76,420.17-31,503.30

Finding the Fourth Proportional to 55,378.86, 76,420.17 and 31,503.30

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Solution

The fourth proportional to 55,378.86, 76,420.17 and 31,503.30 is: 43,473.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,378.86 : 76,420.17 = 31,503.30 : x
  2. Step 2: Convert to fraction form
    55,378.86/76,420.17 = 31,503.30/x
  3. Step 3: Cross multiply
    55,378.86x = 76,420.17 × 31,503.30
  4. Step 4: Simplify right side
    55,378.86x = 2,407,487,541.56
  5. Step 5: Solve for x
    x = 2,407,487,541.56/55,378.86
  6. Step 6: Final answer
    x = 43,473.04

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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.