Home / 75,054.24-103,659.89-51,139.40

Finding the Fourth Proportional to 75,054.24, 103,659.89 and 51,139.40

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Solution

The fourth proportional to 75,054.24, 103,659.89 and 51,139.40 is: 70,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,054.24 : 103,659.89 = 51,139.40 : x
  2. Step 2: Convert to fraction form
    75,054.24/103,659.89 = 51,139.40/x
  3. Step 3: Cross multiply
    75,054.24x = 103,659.89 × 51,139.40
  4. Step 4: Simplify right side
    75,054.24x = 5,301,104,578.67
  5. Step 5: Solve for x
    x = 5,301,104,578.67/75,054.24
  6. Step 6: Final answer
    x = 70,630.31

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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.