Home / 76,537.43-105,638.78-42,557.84

Finding the Fourth Proportional to 76,537.43, 105,638.78 and 42,557.84

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Solution

The fourth proportional to 76,537.43, 105,638.78 and 42,557.84 is: 58,739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,537.43 : 105,638.78 = 42,557.84 : x
  2. Step 2: Convert to fraction form
    76,537.43/105,638.78 = 42,557.84/x
  3. Step 3: Cross multiply
    76,537.43x = 105,638.78 × 42,557.84
  4. Step 4: Simplify right side
    76,537.43x = 4,495,757,556.05
  5. Step 5: Solve for x
    x = 4,495,757,556.05/76,537.43
  6. Step 6: Final answer
    x = 58,739.34

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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.