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Finding the Fourth Proportional to 64,976.91, 89,673.35 and 51,658.08

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Solution

The fourth proportional to 64,976.91, 89,673.35 and 51,658.08 is: 71,292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.91 : 89,673.35 = 51,658.08 : x
  2. Step 2: Convert to fraction form
    64,976.91/89,673.35 = 51,658.08/x
  3. Step 3: Cross multiply
    64,976.91x = 89,673.35 × 51,658.08
  4. Step 4: Simplify right side
    64,976.91x = 4,632,352,829.88
  5. Step 5: Solve for x
    x = 4,632,352,829.88/64,976.91
  6. Step 6: Final answer
    x = 71,292.29

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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.