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Finding the Fourth Proportional to 78,153.48, 107,839.62 and 46,317.24

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Solution

The fourth proportional to 78,153.48, 107,839.62 and 46,317.24 is: 63,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.48 : 107,839.62 = 46,317.24 : x
  2. Step 2: Convert to fraction form
    78,153.48/107,839.62 = 46,317.24/x
  3. Step 3: Cross multiply
    78,153.48x = 107,839.62 × 46,317.24
  4. Step 4: Simplify right side
    78,153.48x = 4,994,833,561.05
  5. Step 5: Solve for x
    x = 4,994,833,561.05/78,153.48
  6. Step 6: Final answer
    x = 63,910.57

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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.