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Finding the Fourth Proportional to 64,558.98, 89,076.79 and 39,064.71

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Solution

The fourth proportional to 64,558.98, 89,076.79 and 39,064.71 is: 53,900.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,558.98 : 89,076.79 = 39,064.71 : x
  2. Step 2: Convert to fraction form
    64,558.98/89,076.79 = 39,064.71/x
  3. Step 3: Cross multiply
    64,558.98x = 89,076.79 × 39,064.71
  4. Step 4: Simplify right side
    64,558.98x = 3,479,758,969.08
  5. Step 5: Solve for x
    x = 3,479,758,969.08/64,558.98
  6. Step 6: Final answer
    x = 53,900.46

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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.