Home / 84,990,030.40-127,485,045.60-54,379,028.80

Finding the Fourth Proportional to 84,990,030.40, 127,485,045.60 and 54,379,028.80

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Solution

The fourth proportional to 84,990,030.40, 127,485,045.60 and 54,379,028.80 is: 81,568,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,990,030.40 : 127,485,045.60 = 54,379,028.80 : x
  2. Step 2: Convert to fraction form
    84,990,030.40/127,485,045.60 = 54,379,028.80/x
  3. Step 3: Cross multiply
    84,990,030.40x = 127,485,045.60 × 54,379,028.80
  4. Step 4: Simplify right side
    84,990,030.40x = 6,932,512,966,251,713
  5. Step 5: Solve for x
    x = 6,932,512,966,251,713/84,990,030.40
  6. Step 6: Final answer
    x = 81,568,543.20

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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.