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Finding the Fourth Proportional to 55,588.68, 76,713.36 and 39,700.20

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Solution

The fourth proportional to 55,588.68, 76,713.36 and 39,700.20 is: 54,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,588.68 : 76,713.36 = 39,700.20 : x
  2. Step 2: Convert to fraction form
    55,588.68/76,713.36 = 39,700.20/x
  3. Step 3: Cross multiply
    55,588.68x = 76,713.36 × 39,700.20
  4. Step 4: Simplify right side
    55,588.68x = 3,045,535,734.67
  5. Step 5: Solve for x
    x = 3,045,535,734.67/55,588.68
  6. Step 6: Final answer
    x = 54,786.98

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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.