Home / 55,077.89-76,007.74-31,209.21

Finding the Fourth Proportional to 55,077.89, 76,007.74 and 31,209.21

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Solution

The fourth proportional to 55,077.89, 76,007.74 and 31,209.21 is: 43,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,077.89 : 76,007.74 = 31,209.21 : x
  2. Step 2: Convert to fraction form
    55,077.89/76,007.74 = 31,209.21/x
  3. Step 3: Cross multiply
    55,077.89x = 76,007.74 × 31,209.21
  4. Step 4: Simplify right side
    55,077.89x = 2,372,141,363.24
  5. Step 5: Solve for x
    x = 2,372,141,363.24/55,077.89
  6. Step 6: Final answer
    x = 43,068.85

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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.