Home / 85,397,003-128,108,775.54-28,676,578.04

Finding the Fourth Proportional to 85,397,003, 128,108,775.54 and 28,676,578.04

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Solution

The fourth proportional to 85,397,003, 128,108,775.54 and 28,676,578.04 is: 43,019,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,397,003 : 128,108,775.54 = 28,676,578.04 : x
  2. Step 2: Convert to fraction form
    85,397,003/128,108,775.54 = 28,676,578.04/x
  3. Step 3: Cross multiply
    85,397,003x = 128,108,775.54 × 28,676,578.04
  4. Step 4: Simplify right side
    85,397,003x = 3,673,721,299,381,653
  5. Step 5: Solve for x
    x = 3,673,721,299,381,653/85,397,003
  6. Step 6: Final answer
    x = 43,019,323.52

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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.