Home / 105,600.56-145,728.81-57,854.07

Finding the Fourth Proportional to 105,600.56, 145,728.81 and 57,854.07

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Solution

The fourth proportional to 105,600.56, 145,728.81 and 57,854.07 is: 79,838.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,600.56 : 145,728.81 = 57,854.07 : x
  2. Step 2: Convert to fraction form
    105,600.56/145,728.81 = 57,854.07/x
  3. Step 3: Cross multiply
    105,600.56x = 145,728.81 × 57,854.07
  4. Step 4: Simplify right side
    105,600.56x = 8,431,004,774.76
  5. Step 5: Solve for x
    x = 8,431,004,774.76/105,600.56
  6. Step 6: Final answer
    x = 79,838.64

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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.