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Finding the Fourth Proportional to 68,645.86, 94,726.83 and 38,430.93

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Solution

The fourth proportional to 68,645.86, 94,726.83 and 38,430.93 is: 53,032.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,645.86 : 94,726.83 = 38,430.93 : x
  2. Step 2: Convert to fraction form
    68,645.86/94,726.83 = 38,430.93/x
  3. Step 3: Cross multiply
    68,645.86x = 94,726.83 × 38,430.93
  4. Step 4: Simplify right side
    68,645.86x = 3,640,440,172.85
  5. Step 5: Solve for x
    x = 3,640,440,172.85/68,645.86
  6. Step 6: Final answer
    x = 53,032.19

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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.