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Finding the Fourth Proportional to 42,808.80, 64,040.40 and 37,029.60

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Solution

The fourth proportional to 42,808.80, 64,040.40 and 37,029.60 is: 55,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,808.80 : 64,040.40 = 37,029.60 : x
  2. Step 2: Convert to fraction form
    42,808.80/64,040.40 = 37,029.60/x
  3. Step 3: Cross multiply
    42,808.80x = 64,040.40 × 37,029.60
  4. Step 4: Simplify right side
    42,808.80x = 2,371,390,395.84
  5. Step 5: Solve for x
    x = 2,371,390,395.84/42,808.80
  6. Step 6: Final answer
    x = 55,394.93

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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.