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Finding the Fourth Proportional to 105,023.88, 144,933.48 and 57,276.20

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Solution

The fourth proportional to 105,023.88, 144,933.48 and 57,276.20 is: 79,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,023.88 : 144,933.48 = 57,276.20 : x
  2. Step 2: Convert to fraction form
    105,023.88/144,933.48 = 57,276.20/x
  3. Step 3: Cross multiply
    105,023.88x = 144,933.48 × 57,276.20
  4. Step 4: Simplify right side
    105,023.88x = 8,301,238,262.51
  5. Step 5: Solve for x
    x = 8,301,238,262.51/105,023.88
  6. Step 6: Final answer
    x = 79,041.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.