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Finding the Fourth Proportional to 55,778.88, 76,966.56 and 31,900.08

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Solution

The fourth proportional to 55,778.88, 76,966.56 and 31,900.08 is: 44,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,778.88 : 76,966.56 = 31,900.08 : x
  2. Step 2: Convert to fraction form
    55,778.88/76,966.56 = 31,900.08/x
  3. Step 3: Cross multiply
    55,778.88x = 76,966.56 × 31,900.08
  4. Step 4: Simplify right side
    55,778.88x = 2,455,239,421.32
  5. Step 5: Solve for x
    x = 2,455,239,421.32/55,778.88
  6. Step 6: Final answer
    x = 44,017.37

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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.