Home / 81,465,987.40-122,039,548.80-49,021,514.35

Finding the Fourth Proportional to 81,465,987.40, 122,039,548.80 and 49,021,514.35

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Solution

The fourth proportional to 81,465,987.40, 122,039,548.80 and 49,021,514.35 is: 73,436,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,987.40 : 122,039,548.80 = 49,021,514.35 : x
  2. Step 2: Convert to fraction form
    81,465,987.40/122,039,548.80 = 49,021,514.35/x
  3. Step 3: Cross multiply
    81,465,987.40x = 122,039,548.80 × 49,021,514.35
  4. Step 4: Simplify right side
    81,465,987.40x = 5,982,563,492,766,725
  5. Step 5: Solve for x
    x = 5,982,563,492,766,725/81,465,987.40
  6. Step 6: Final answer
    x = 73,436,334.40

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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.