Home / 82,720,999.80-124,081,499.70-55,511,220.60

Finding the Fourth Proportional to 82,720,999.80, 124,081,499.70 and 55,511,220.60

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Solution

The fourth proportional to 82,720,999.80, 124,081,499.70 and 55,511,220.60 is: 83,266,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,720,999.80 : 124,081,499.70 = 55,511,220.60 : x
  2. Step 2: Convert to fraction form
    82,720,999.80/124,081,499.70 = 55,511,220.60/x
  3. Step 3: Cross multiply
    82,720,999.80x = 124,081,499.70 × 55,511,220.60
  4. Step 4: Simplify right side
    82,720,999.80x = 6,887,915,502,225,534
  5. Step 5: Solve for x
    x = 6,887,915,502,225,534/82,720,999.80
  6. Step 6: Final answer
    x = 83,266,830.90

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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.