Home / 85,215,781.60-127,823,672.40-71,044,021.60

Finding the Fourth Proportional to 85,215,781.60, 127,823,672.40 and 71,044,021.60

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Solution

The fourth proportional to 85,215,781.60, 127,823,672.40 and 71,044,021.60 is: 106,566,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215,781.60 : 127,823,672.40 = 71,044,021.60 : x
  2. Step 2: Convert to fraction form
    85,215,781.60/127,823,672.40 = 71,044,021.60/x
  3. Step 3: Cross multiply
    85,215,781.60x = 127,823,672.40 × 71,044,021.60
  4. Step 4: Simplify right side
    85,215,781.60x = 9,081,107,742,976,924
  5. Step 5: Solve for x
    x = 9,081,107,742,976,924/85,215,781.60
  6. Step 6: Final answer
    x = 106,566,032.40

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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.