Home / 74,821.19-103,263.62-42,989.40

Finding the Fourth Proportional to 74,821.19, 103,263.62 and 42,989.40

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Solution

The fourth proportional to 74,821.19, 103,263.62 and 42,989.40 is: 59,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,821.19 : 103,263.62 = 42,989.40 : x
  2. Step 2: Convert to fraction form
    74,821.19/103,263.62 = 42,989.40/x
  3. Step 3: Cross multiply
    74,821.19x = 103,263.62 × 42,989.40
  4. Step 4: Simplify right side
    74,821.19x = 4,439,240,850.68
  5. Step 5: Solve for x
    x = 4,439,240,850.68/74,821.19
  6. Step 6: Final answer
    x = 59,331.34

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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.