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Finding the Fourth Proportional to 55,955.91, 83,925.59 and 20,408.91

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Solution

The fourth proportional to 55,955.91, 83,925.59 and 20,408.91 is: 30,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,955.91 : 83,925.59 = 20,408.91 : x
  2. Step 2: Convert to fraction form
    55,955.91/83,925.59 = 20,408.91/x
  3. Step 3: Cross multiply
    55,955.91x = 83,925.59 × 20,408.91
  4. Step 4: Simplify right side
    55,955.91x = 1,712,829,761.98
  5. Step 5: Solve for x
    x = 1,712,829,761.98/55,955.91
  6. Step 6: Final answer
    x = 30,610.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.