Home / 55,417.05-76,479.43-31,543.72

Finding the Fourth Proportional to 55,417.05, 76,479.43 and 31,543.72

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Solution

The fourth proportional to 55,417.05, 76,479.43 and 31,543.72 is: 43,532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,417.05 : 76,479.43 = 31,543.72 : x
  2. Step 2: Convert to fraction form
    55,417.05/76,479.43 = 31,543.72/x
  3. Step 3: Cross multiply
    55,417.05x = 76,479.43 × 31,543.72
  4. Step 4: Simplify right side
    55,417.05x = 2,412,445,725.68
  5. Step 5: Solve for x
    x = 2,412,445,725.68/55,417.05
  6. Step 6: Final answer
    x = 43,532.55

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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.