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Finding the Fourth Proportional to 69,851.16, 104,782.95 and 19,930.32

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Solution

The fourth proportional to 69,851.16, 104,782.95 and 19,930.32 is: 29,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,851.16 : 104,782.95 = 19,930.32 : x
  2. Step 2: Convert to fraction form
    69,851.16/104,782.95 = 19,930.32/x
  3. Step 3: Cross multiply
    69,851.16x = 104,782.95 × 19,930.32
  4. Step 4: Simplify right side
    69,851.16x = 2,088,357,724.04
  5. Step 5: Solve for x
    x = 2,088,357,724.04/69,851.16
  6. Step 6: Final answer
    x = 29,897.25

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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.