Home / 72,637,128.35-100,238,408.75-39,596,648.59

Finding the Fourth Proportional to 72,637,128.35, 100,238,408.75 and 39,596,648.59

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Solution

The fourth proportional to 72,637,128.35, 100,238,408.75 and 39,596,648.59 is: 54,642,923.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637,128.35 : 100,238,408.75 = 39,596,648.59 : x
  2. Step 2: Convert to fraction form
    72,637,128.35/100,238,408.75 = 39,596,648.59/x
  3. Step 3: Cross multiply
    72,637,128.35x = 100,238,408.75 × 39,596,648.59
  4. Step 4: Simplify right side
    72,637,128.35x = 3,969,105,046,718,821
  5. Step 5: Solve for x
    x = 3,969,105,046,718,821/72,637,128.35
  6. Step 6: Final answer
    x = 54,642,923.49

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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.