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Finding the Fourth Proportional to 64,690.60, 89,266.68 and 36,395.68

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Solution

The fourth proportional to 64,690.60, 89,266.68 and 36,395.68 is: 50,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,690.60 : 89,266.68 = 36,395.68 : x
  2. Step 2: Convert to fraction form
    64,690.60/89,266.68 = 36,395.68/x
  3. Step 3: Cross multiply
    64,690.60x = 89,266.68 × 36,395.68
  4. Step 4: Simplify right side
    64,690.60x = 3,248,921,519.94
  5. Step 5: Solve for x
    x = 3,248,921,519.94/64,690.60
  6. Step 6: Final answer
    x = 50,222.47

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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.