Home / 84,780.28-117,006.14-54,181.60

Finding the Fourth Proportional to 84,780.28, 117,006.14 and 54,181.60

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Solution

The fourth proportional to 84,780.28, 117,006.14 and 54,181.60 is: 74,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,780.28 : 117,006.14 = 54,181.60 : x
  2. Step 2: Convert to fraction form
    84,780.28/117,006.14 = 54,181.60/x
  3. Step 3: Cross multiply
    84,780.28x = 117,006.14 × 54,181.60
  4. Step 4: Simplify right side
    84,780.28x = 6,339,579,875.02
  5. Step 5: Solve for x
    x = 6,339,579,875.02/84,780.28
  6. Step 6: Final answer
    x = 74,776.59

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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.