Home / 84,788.10-117,009.90-54,631.80

Finding the Fourth Proportional to 84,788.10, 117,009.90 and 54,631.80

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Solution

The fourth proportional to 84,788.10, 117,009.90 and 54,631.80 is: 75,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,788.10 : 117,009.90 = 54,631.80 : x
  2. Step 2: Convert to fraction form
    84,788.10/117,009.90 = 54,631.80/x
  3. Step 3: Cross multiply
    84,788.10x = 117,009.90 × 54,631.80
  4. Step 4: Simplify right side
    84,788.10x = 6,392,461,454.82
  5. Step 5: Solve for x
    x = 6,392,461,454.82/84,788.10
  6. Step 6: Final answer
    x = 75,393.38

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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.