Home / 76,630.05-105,749.55-42,641.64

Finding the Fourth Proportional to 76,630.05, 105,749.55 and 42,641.64

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Solution

The fourth proportional to 76,630.05, 105,749.55 and 42,641.64 is: 58,845.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,630.05 : 105,749.55 = 42,641.64 : x
  2. Step 2: Convert to fraction form
    76,630.05/105,749.55 = 42,641.64/x
  3. Step 3: Cross multiply
    76,630.05x = 105,749.55 × 42,641.64
  4. Step 4: Simplify right side
    76,630.05x = 4,509,334,241.26
  5. Step 5: Solve for x
    x = 4,509,334,241.26/76,630.05
  6. Step 6: Final answer
    x = 58,845.51

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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.