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Finding the Fourth Proportional to 64,690.51, 89,265.12 and 36,002.99

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Solution

The fourth proportional to 64,690.51, 89,265.12 and 36,002.99 is: 49,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,690.51 : 89,265.12 = 36,002.99 : x
  2. Step 2: Convert to fraction form
    64,690.51/89,265.12 = 36,002.99/x
  3. Step 3: Cross multiply
    64,690.51x = 89,265.12 × 36,002.99
  4. Step 4: Simplify right side
    64,690.51x = 3,213,811,222.71
  5. Step 5: Solve for x
    x = 3,213,811,222.71/64,690.51
  6. Step 6: Final answer
    x = 49,679.80

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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.