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Finding the Fourth Proportional to 105,573.92, 145,692.06 and 57,828.06

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Solution

The fourth proportional to 105,573.92, 145,692.06 and 57,828.06 is: 79,802.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,573.92 : 145,692.06 = 57,828.06 : x
  2. Step 2: Convert to fraction form
    105,573.92/145,692.06 = 57,828.06/x
  3. Step 3: Cross multiply
    105,573.92x = 145,692.06 × 57,828.06
  4. Step 4: Simplify right side
    105,573.92x = 8,425,089,187.20
  5. Step 5: Solve for x
    x = 8,425,089,187.20/105,573.92
  6. Step 6: Final answer
    x = 79,802.75

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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.