Home / 42,939-59,235.66-30,370.68

Finding the Fourth Proportional to 42,939, 59,235.66 and 30,370.68

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Solution

The fourth proportional to 42,939, 59,235.66 and 30,370.68 is: 41,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,939 : 59,235.66 = 30,370.68 : x
  2. Step 2: Convert to fraction form
    42,939/59,235.66 = 30,370.68/x
  3. Step 3: Cross multiply
    42,939x = 59,235.66 × 30,370.68
  4. Step 4: Simplify right side
    42,939x = 1,799,027,274.45
  5. Step 5: Solve for x
    x = 1,799,027,274.45/42,939
  6. Step 6: Final answer
    x = 41,897.28

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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.