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Finding the Fourth Proportional to 76,625.51, 105,669.02 and 51,132.94

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Solution

The fourth proportional to 76,625.51, 105,669.02 and 51,132.94 is: 70,513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,625.51 : 105,669.02 = 51,132.94 : x
  2. Step 2: Convert to fraction form
    76,625.51/105,669.02 = 51,132.94/x
  3. Step 3: Cross multiply
    76,625.51x = 105,669.02 × 51,132.94
  4. Step 4: Simplify right side
    76,625.51x = 5,403,167,523.18
  5. Step 5: Solve for x
    x = 5,403,167,523.18/76,625.51
  6. Step 6: Final answer
    x = 70,513.96

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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.