Home / 81,607,814.80-122,411,722.20-80,851,987.60

Finding the Fourth Proportional to 81,607,814.80, 122,411,722.20 and 80,851,987.60

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Solution

The fourth proportional to 81,607,814.80, 122,411,722.20 and 80,851,987.60 is: 121,277,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,814.80 : 122,411,722.20 = 80,851,987.60 : x
  2. Step 2: Convert to fraction form
    81,607,814.80/122,411,722.20 = 80,851,987.60/x
  3. Step 3: Cross multiply
    81,607,814.80x = 122,411,722.20 × 80,851,987.60
  4. Step 4: Simplify right side
    81,607,814.80x = 9,897,231,045,409,044
  5. Step 5: Solve for x
    x = 9,897,231,045,409,044/81,607,814.80
  6. Step 6: Final answer
    x = 121,277,981.40

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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.