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Finding the Fourth Proportional to 64,891.50, 89,550.36 and 35,083.50

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Solution

The fourth proportional to 64,891.50, 89,550.36 and 35,083.50 is: 48,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,891.50 : 89,550.36 = 35,083.50 : x
  2. Step 2: Convert to fraction form
    64,891.50/89,550.36 = 35,083.50/x
  3. Step 3: Cross multiply
    64,891.50x = 89,550.36 × 35,083.50
  4. Step 4: Simplify right side
    64,891.50x = 3,141,740,055.06
  5. Step 5: Solve for x
    x = 3,141,740,055.06/64,891.50
  6. Step 6: Final answer
    x = 48,415.28

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1.5x scale

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.