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Finding the Fourth Proportional to 64,977.12, 89,668.56 and 35,169.12

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Solution

The fourth proportional to 64,977.12, 89,668.56 and 35,169.12 is: 48,533.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.12 : 89,668.56 = 35,169.12 : x
  2. Step 2: Convert to fraction form
    64,977.12/89,668.56 = 35,169.12/x
  3. Step 3: Cross multiply
    64,977.12x = 89,668.56 × 35,169.12
  4. Step 4: Simplify right side
    64,977.12x = 3,153,564,346.87
  5. Step 5: Solve for x
    x = 3,153,564,346.87/64,977.12
  6. Step 6: Final answer
    x = 48,533.46

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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.