Home / 31,638,706.32-43,661,021.54-18,587,154.98

Finding the Fourth Proportional to 31,638,706.32, 43,661,021.54 and 18,587,154.98

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Solution

The fourth proportional to 31,638,706.32, 43,661,021.54 and 18,587,154.98 is: 25,650,042.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638,706.32 : 43,661,021.54 = 18,587,154.98 : x
  2. Step 2: Convert to fraction form
    31,638,706.32/43,661,021.54 = 18,587,154.98/x
  3. Step 3: Cross multiply
    31,638,706.32x = 43,661,021.54 × 18,587,154.98
  4. Step 4: Simplify right side
    31,638,706.32x = 811,534,173,949,098.25
  5. Step 5: Solve for x
    x = 811,534,173,949,098.25/31,638,706.32
  6. Step 6: Final answer
    x = 25,650,042.89

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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.