Home / 81,962.51-122,902.65-39,816.18

Finding the Fourth Proportional to 81,962.51, 122,902.65 and 39,816.18

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Solution

The fourth proportional to 81,962.51, 122,902.65 and 39,816.18 is: 59,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,962.51 : 122,902.65 = 39,816.18 : x
  2. Step 2: Convert to fraction form
    81,962.51/122,902.65 = 39,816.18/x
  3. Step 3: Cross multiply
    81,962.51x = 122,902.65 × 39,816.18
  4. Step 4: Simplify right side
    81,962.51x = 4,893,514,034.88
  5. Step 5: Solve for x
    x = 4,893,514,034.88/81,962.51
  6. Step 6: Final answer
    x = 59,704.30

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1.5x scale

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.