Home / 84,816.78-117,031.95-54,991.50

Finding the Fourth Proportional to 84,816.78, 117,031.95 and 54,991.50

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Solution

The fourth proportional to 84,816.78, 117,031.95 and 54,991.50 is: 75,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,816.78 : 117,031.95 = 54,991.50 : x
  2. Step 2: Convert to fraction form
    84,816.78/117,031.95 = 54,991.50/x
  3. Step 3: Cross multiply
    84,816.78x = 117,031.95 × 54,991.50
  4. Step 4: Simplify right side
    84,816.78x = 6,435,762,478.43
  5. Step 5: Solve for x
    x = 6,435,762,478.43/84,816.78
  6. Step 6: Final answer
    x = 75,878.41

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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.