Home / 43,178-64,769.16-40,905.68

Finding the Fourth Proportional to 43,178, 64,769.16 and 40,905.68

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Solution

The fourth proportional to 43,178, 64,769.16 and 40,905.68 is: 61,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178 : 64,769.16 = 40,905.68 : x
  2. Step 2: Convert to fraction form
    43,178/64,769.16 = 40,905.68/x
  3. Step 3: Cross multiply
    43,178x = 64,769.16 × 40,905.68
  4. Step 4: Simplify right side
    43,178x = 2,649,426,532.83
  5. Step 5: Solve for x
    x = 2,649,426,532.83/43,178
  6. Step 6: Final answer
    x = 61,360.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.