Home / 55,741.59-76,920.71-31,870.89

Finding the Fourth Proportional to 55,741.59, 76,920.71 and 31,870.89

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Solution

The fourth proportional to 55,741.59, 76,920.71 and 31,870.89 is: 43,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,741.59 : 76,920.71 = 31,870.89 : x
  2. Step 2: Convert to fraction form
    55,741.59/76,920.71 = 31,870.89/x
  3. Step 3: Cross multiply
    55,741.59x = 76,920.71 × 31,870.89
  4. Step 4: Simplify right side
    55,741.59x = 2,451,531,327.78
  5. Step 5: Solve for x
    x = 2,451,531,327.78/55,741.59
  6. Step 6: Final answer
    x = 43,980.29

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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.