Home / 76,149.69-105,085.26-42,157.46

Finding the Fourth Proportional to 76,149.69, 105,085.26 and 42,157.46

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Solution

The fourth proportional to 76,149.69, 105,085.26 and 42,157.46 is: 58,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,149.69 : 105,085.26 = 42,157.46 : x
  2. Step 2: Convert to fraction form
    76,149.69/105,085.26 = 42,157.46/x
  3. Step 3: Cross multiply
    76,149.69x = 105,085.26 × 42,157.46
  4. Step 4: Simplify right side
    76,149.69x = 4,430,127,119.61
  5. Step 5: Solve for x
    x = 4,430,127,119.61/76,149.69
  6. Step 6: Final answer
    x = 58,176.56

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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.