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Finding the Fourth Proportional to 64,810.89, 89,439.03 and 35,002.89

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Solution

The fourth proportional to 64,810.89, 89,439.03 and 35,002.89 is: 48,303.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,810.89 : 89,439.03 = 35,002.89 : x
  2. Step 2: Convert to fraction form
    64,810.89/89,439.03 = 35,002.89/x
  3. Step 3: Cross multiply
    64,810.89x = 89,439.03 × 35,002.89
  4. Step 4: Simplify right side
    64,810.89x = 3,130,624,528.80
  5. Step 5: Solve for x
    x = 3,130,624,528.80/64,810.89
  6. Step 6: Final answer
    x = 48,303.99

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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.