Home / 85,799.19-118,362.83-53,985.63

Finding the Fourth Proportional to 85,799.19, 118,362.83 and 53,985.63

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Solution

The fourth proportional to 85,799.19, 118,362.83 and 53,985.63 is: 74,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,799.19 : 118,362.83 = 53,985.63 : x
  2. Step 2: Convert to fraction form
    85,799.19/118,362.83 = 53,985.63/x
  3. Step 3: Cross multiply
    85,799.19x = 118,362.83 × 53,985.63
  4. Step 4: Simplify right side
    85,799.19x = 6,389,891,676.20
  5. Step 5: Solve for x
    x = 6,389,891,676.20/85,799.19
  6. Step 6: Final answer
    x = 74,474.97

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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.