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Finding the Fourth Proportional to 76,637.56, 105,758.80 and 43,103.56

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Solution

The fourth proportional to 76,637.56, 105,758.80 and 43,103.56 is: 59,482.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,637.56 : 105,758.80 = 43,103.56 : x
  2. Step 2: Convert to fraction form
    76,637.56/105,758.80 = 43,103.56/x
  3. Step 3: Cross multiply
    76,637.56x = 105,758.80 × 43,103.56
  4. Step 4: Simplify right side
    76,637.56x = 4,558,580,781.33
  5. Step 5: Solve for x
    x = 4,558,580,781.33/76,637.56
  6. Step 6: Final answer
    x = 59,482.33

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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.