Home / 112,772.80-155,624.08-61,783.04

Finding the Fourth Proportional to 112,772.80, 155,624.08 and 61,783.04

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Solution

The fourth proportional to 112,772.80, 155,624.08 and 61,783.04 is: 85,259.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,772.80 : 155,624.08 = 61,783.04 : x
  2. Step 2: Convert to fraction form
    112,772.80/155,624.08 = 61,783.04/x
  3. Step 3: Cross multiply
    112,772.80x = 155,624.08 × 61,783.04
  4. Step 4: Simplify right side
    112,772.80x = 9,614,928,936.28
  5. Step 5: Solve for x
    x = 9,614,928,936.28/112,772.80
  6. Step 6: Final answer
    x = 85,259.29

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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.