Home / 55,681.75-76,840.82-30,531.79

Finding the Fourth Proportional to 55,681.75, 76,840.82 and 30,531.79

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Solution

The fourth proportional to 55,681.75, 76,840.82 and 30,531.79 is: 42,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,681.75 : 76,840.82 = 30,531.79 : x
  2. Step 2: Convert to fraction form
    55,681.75/76,840.82 = 30,531.79/x
  3. Step 3: Cross multiply
    55,681.75x = 76,840.82 × 30,531.79
  4. Step 4: Simplify right side
    55,681.75x = 2,346,087,779.67
  5. Step 5: Solve for x
    x = 2,346,087,779.67/55,681.75
  6. Step 6: Final answer
    x = 42,133.87

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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.