Home / 74,395.19-102,640.37-42,125.39

Finding the Fourth Proportional to 74,395.19, 102,640.37 and 42,125.39

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Solution

The fourth proportional to 74,395.19, 102,640.37 and 42,125.39 is: 58,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,395.19 : 102,640.37 = 42,125.39 : x
  2. Step 2: Convert to fraction form
    74,395.19/102,640.37 = 42,125.39/x
  3. Step 3: Cross multiply
    74,395.19x = 102,640.37 × 42,125.39
  4. Step 4: Simplify right side
    74,395.19x = 4,323,765,615.99
  5. Step 5: Solve for x
    x = 4,323,765,615.99/74,395.19
  6. Step 6: Final answer
    x = 58,118.89

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1.5x scale

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.