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Finding the Fourth Proportional to 76,241.87, 105,217.83 and 42,254.07

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Solution

The fourth proportional to 76,241.87, 105,217.83 and 42,254.07 is: 58,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,241.87 : 105,217.83 = 42,254.07 : x
  2. Step 2: Convert to fraction form
    76,241.87/105,217.83 = 42,254.07/x
  3. Step 3: Cross multiply
    76,241.87x = 105,217.83 × 42,254.07
  4. Step 4: Simplify right side
    76,241.87x = 4,445,881,554.07
  5. Step 5: Solve for x
    x = 4,445,881,554.07/76,241.87
  6. Step 6: Final answer
    x = 58,312.86

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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.