Home / 83,047,016.80-124,570,525.20-78,264,047.80

Finding the Fourth Proportional to 83,047,016.80, 124,570,525.20 and 78,264,047.80

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Solution

The fourth proportional to 83,047,016.80, 124,570,525.20 and 78,264,047.80 is: 117,396,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,047,016.80 : 124,570,525.20 = 78,264,047.80 : x
  2. Step 2: Convert to fraction form
    83,047,016.80/124,570,525.20 = 78,264,047.80/x
  3. Step 3: Cross multiply
    83,047,016.80x = 124,570,525.20 × 78,264,047.80
  4. Step 4: Simplify right side
    83,047,016.80x = 9,749,393,538,723,904
  5. Step 5: Solve for x
    x = 9,749,393,538,723,904/83,047,016.80
  6. Step 6: Final answer
    x = 117,396,071.70

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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.