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Finding the Fourth Proportional to 64,970.61, 89,658.77 and 36,677.49

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Solution

The fourth proportional to 64,970.61, 89,658.77 and 36,677.49 is: 50,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.61 : 89,658.77 = 36,677.49 : x
  2. Step 2: Convert to fraction form
    64,970.61/89,658.77 = 36,677.49/x
  3. Step 3: Cross multiply
    64,970.61x = 89,658.77 × 36,677.49
  4. Step 4: Simplify right side
    64,970.61x = 3,288,458,456.70
  5. Step 5: Solve for x
    x = 3,288,458,456.70/64,970.61
  6. Step 6: Final answer
    x = 50,614.55

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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.