Home / 76,741.40-105,919.48-51,576.32

Finding the Fourth Proportional to 76,741.40, 105,919.48 and 51,576.32

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Solution

The fourth proportional to 76,741.40, 105,919.48 and 51,576.32 is: 71,186.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,741.40 : 105,919.48 = 51,576.32 : x
  2. Step 2: Convert to fraction form
    76,741.40/105,919.48 = 51,576.32/x
  3. Step 3: Cross multiply
    76,741.40x = 105,919.48 × 51,576.32
  4. Step 4: Simplify right side
    76,741.40x = 5,462,936,994.71
  5. Step 5: Solve for x
    x = 5,462,936,994.71/76,741.40
  6. Step 6: Final answer
    x = 71,186.31

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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.