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Finding the Fourth Proportional to 35,442.80, 53,164.20 and 19,858.40

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Solution

The fourth proportional to 35,442.80, 53,164.20 and 19,858.40 is: 29,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,442.80 : 53,164.20 = 19,858.40 : x
  2. Step 2: Convert to fraction form
    35,442.80/53,164.20 = 19,858.40/x
  3. Step 3: Cross multiply
    35,442.80x = 53,164.20 × 19,858.40
  4. Step 4: Simplify right side
    35,442.80x = 1,055,755,949.28
  5. Step 5: Solve for x
    x = 1,055,755,949.28/35,442.80
  6. Step 6: Final answer
    x = 29,787.60

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1.5x scale

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.