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Finding the Fourth Proportional to 75,603.90, 104,349.15 and 45,390.51

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Solution

The fourth proportional to 75,603.90, 104,349.15 and 45,390.51 is: 62,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,603.90 : 104,349.15 = 45,390.51 : x
  2. Step 2: Convert to fraction form
    75,603.90/104,349.15 = 45,390.51/x
  3. Step 3: Cross multiply
    75,603.90x = 104,349.15 × 45,390.51
  4. Step 4: Simplify right side
    75,603.90x = 4,736,461,136.57
  5. Step 5: Solve for x
    x = 4,736,461,136.57/75,603.90
  6. Step 6: Final answer
    x = 62,648.37

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1.5x scale

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.