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Finding the Fourth Proportional to 64,028.80, 96,032.40 and 19,643.50

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Solution

The fourth proportional to 64,028.80, 96,032.40 and 19,643.50 is: 29,461.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,028.80 : 96,032.40 = 19,643.50 : x
  2. Step 2: Convert to fraction form
    64,028.80/96,032.40 = 19,643.50/x
  3. Step 3: Cross multiply
    64,028.80x = 96,032.40 × 19,643.50
  4. Step 4: Simplify right side
    64,028.80x = 1,886,412,449.40
  5. Step 5: Solve for x
    x = 1,886,412,449.40/64,028.80
  6. Step 6: Final answer
    x = 29,461.94

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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.