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Finding the Fourth Proportional to 64,400.10, 96,600.15 and 54,886.65

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Solution

The fourth proportional to 64,400.10, 96,600.15 and 54,886.65 is: 82,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,400.10 : 96,600.15 = 54,886.65 : x
  2. Step 2: Convert to fraction form
    64,400.10/96,600.15 = 54,886.65/x
  3. Step 3: Cross multiply
    64,400.10x = 96,600.15 × 54,886.65
  4. Step 4: Simplify right side
    64,400.10x = 5,302,058,623.00
  5. Step 5: Solve for x
    x = 5,302,058,623.00/64,400.10
  6. Step 6: Final answer
    x = 82,329.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.