Home / 76,731.40-105,905.66-51,566.32

Finding the Fourth Proportional to 76,731.40, 105,905.66 and 51,566.32

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Solution

The fourth proportional to 76,731.40, 105,905.66 and 51,566.32 is: 71,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,731.40 : 105,905.66 = 51,566.32 : x
  2. Step 2: Convert to fraction form
    76,731.40/105,905.66 = 51,566.32/x
  3. Step 3: Cross multiply
    76,731.40x = 105,905.66 × 51,566.32
  4. Step 4: Simplify right side
    76,731.40x = 5,461,165,153.37
  5. Step 5: Solve for x
    x = 5,461,165,153.37/76,731.40
  6. Step 6: Final answer
    x = 71,172.49

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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.