Home / 91,021.49-136,594.15-55,853.81

Finding the Fourth Proportional to 91,021.49, 136,594.15 and 55,853.81

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Solution

The fourth proportional to 91,021.49, 136,594.15 and 55,853.81 is: 83,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,021.49 : 136,594.15 = 55,853.81 : x
  2. Step 2: Convert to fraction form
    91,021.49/136,594.15 = 55,853.81/x
  3. Step 3: Cross multiply
    91,021.49x = 136,594.15 × 55,853.81
  4. Step 4: Simplify right side
    91,021.49x = 7,629,302,878.61
  5. Step 5: Solve for x
    x = 7,629,302,878.61/91,021.49
  6. Step 6: Final answer
    x = 83,818.70

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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.