Home / 42,880.61-64,315.07-11,288.02

Finding the Fourth Proportional to 42,880.61, 64,315.07 and 11,288.02

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Solution

The fourth proportional to 42,880.61, 64,315.07 and 11,288.02 is: 16,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,880.61 : 64,315.07 = 11,288.02 : x
  2. Step 2: Convert to fraction form
    42,880.61/64,315.07 = 11,288.02/x
  3. Step 3: Cross multiply
    42,880.61x = 64,315.07 × 11,288.02
  4. Step 4: Simplify right side
    42,880.61x = 725,989,796.46
  5. Step 5: Solve for x
    x = 725,989,796.46/42,880.61
  6. Step 6: Final answer
    x = 16,930.49

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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.