Home / 105,563.17-145,677.16-57,816.64

Finding the Fourth Proportional to 105,563.17, 145,677.16 and 57,816.64

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Solution

The fourth proportional to 105,563.17, 145,677.16 and 57,816.64 is: 79,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,563.17 : 145,677.16 = 57,816.64 : x
  2. Step 2: Convert to fraction form
    105,563.17/145,677.16 = 57,816.64/x
  3. Step 3: Cross multiply
    105,563.17x = 145,677.16 × 57,816.64
  4. Step 4: Simplify right side
    105,563.17x = 8,422,563,915.94
  5. Step 5: Solve for x
    x = 8,422,563,915.94/105,563.17
  6. Step 6: Final answer
    x = 79,786.96

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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.