Home / 105,231.51-145,222.68-57,487.94

Finding the Fourth Proportional to 105,231.51, 145,222.68 and 57,487.94

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Solution

The fourth proportional to 105,231.51, 145,222.68 and 57,487.94 is: 79,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,231.51 : 145,222.68 = 57,487.94 : x
  2. Step 2: Convert to fraction form
    105,231.51/145,222.68 = 57,487.94/x
  3. Step 3: Cross multiply
    105,231.51x = 145,222.68 × 57,487.94
  4. Step 4: Simplify right side
    105,231.51x = 8,348,551,988.37
  5. Step 5: Solve for x
    x = 8,348,551,988.37/105,231.51
  6. Step 6: Final answer
    x = 79,335.10

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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.