Home / 103,072.76-142,208.08-57,744.60

Finding the Fourth Proportional to 103,072.76, 142,208.08 and 57,744.60

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Solution

The fourth proportional to 103,072.76, 142,208.08 and 57,744.60 is: 79,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,072.76 : 142,208.08 = 57,744.60 : x
  2. Step 2: Convert to fraction form
    103,072.76/142,208.08 = 57,744.60/x
  3. Step 3: Cross multiply
    103,072.76x = 142,208.08 × 57,744.60
  4. Step 4: Simplify right side
    103,072.76x = 8,211,748,696.37
  5. Step 5: Solve for x
    x = 8,211,748,696.37/103,072.76
  6. Step 6: Final answer
    x = 79,669.44

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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.