Home / 72,815.31-100,484.87-40,984.29

Finding the Fourth Proportional to 72,815.31, 100,484.87 and 40,984.29

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Solution

The fourth proportional to 72,815.31, 100,484.87 and 40,984.29 is: 56,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815.31 : 100,484.87 = 40,984.29 : x
  2. Step 2: Convert to fraction form
    72,815.31/100,484.87 = 40,984.29/x
  3. Step 3: Cross multiply
    72,815.31x = 100,484.87 × 40,984.29
  4. Step 4: Simplify right side
    72,815.31x = 4,118,300,847.77
  5. Step 5: Solve for x
    x = 4,118,300,847.77/72,815.31
  6. Step 6: Final answer
    x = 56,558.17

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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.