Home / 39,975,254.36-55,165,869.46-21,640,539.86

Finding the Fourth Proportional to 39,975,254.36, 55,165,869.46 and 21,640,539.86

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Solution

The fourth proportional to 39,975,254.36, 55,165,869.46 and 21,640,539.86 is: 29,863,954.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975,254.36 : 55,165,869.46 = 21,640,539.86 : x
  2. Step 2: Convert to fraction form
    39,975,254.36/55,165,869.46 = 21,640,539.86/x
  3. Step 3: Cross multiply
    39,975,254.36x = 55,165,869.46 × 21,640,539.86
  4. Step 4: Simplify right side
    39,975,254.36x = 1,193,819,196,960,686.75
  5. Step 5: Solve for x
    x = 1,193,819,196,960,686.75/39,975,254.36
  6. Step 6: Final answer
    x = 29,863,954.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.