Home / 105,487.07-145,572.30-57,743.43

Finding the Fourth Proportional to 105,487.07, 145,572.30 and 57,743.43

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Solution

The fourth proportional to 105,487.07, 145,572.30 and 57,743.43 is: 79,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.07 : 145,572.30 = 57,743.43 : x
  2. Step 2: Convert to fraction form
    105,487.07/145,572.30 = 57,743.43/x
  3. Step 3: Cross multiply
    105,487.07x = 145,572.30 × 57,743.43
  4. Step 4: Simplify right side
    105,487.07x = 8,405,843,914.99
  5. Step 5: Solve for x
    x = 8,405,843,914.99/105,487.07
  6. Step 6: Final answer
    x = 79,686.02

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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.