Home / 105,427.56-145,489.26-57,681.48

Finding the Fourth Proportional to 105,427.56, 145,489.26 and 57,681.48

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Solution

The fourth proportional to 105,427.56, 145,489.26 and 57,681.48 is: 79,600.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,427.56 : 145,489.26 = 57,681.48 : x
  2. Step 2: Convert to fraction form
    105,427.56/145,489.26 = 57,681.48/x
  3. Step 3: Cross multiply
    105,427.56x = 145,489.26 × 57,681.48
  4. Step 4: Simplify right side
    105,427.56x = 8,392,035,840.90
  5. Step 5: Solve for x
    x = 8,392,035,840.90/105,427.56
  6. Step 6: Final answer
    x = 79,600.02

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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.