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Finding the Fourth Proportional to 64,536.71, 89,062.64 and 39,047.75

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Solution

The fourth proportional to 64,536.71, 89,062.64 and 39,047.75 is: 53,887.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,536.71 : 89,062.64 = 39,047.75 : x
  2. Step 2: Convert to fraction form
    64,536.71/89,062.64 = 39,047.75/x
  3. Step 3: Cross multiply
    64,536.71x = 89,062.64 × 39,047.75
  4. Step 4: Simplify right side
    64,536.71x = 3,477,696,041.90
  5. Step 5: Solve for x
    x = 3,477,696,041.90/64,536.71
  6. Step 6: Final answer
    x = 53,887.10

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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.