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Finding the Fourth Proportional to 64,989.90, 89,638.04 and 41,093.55

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Solution

The fourth proportional to 64,989.90, 89,638.04 and 41,093.55 is: 56,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.90 : 89,638.04 = 41,093.55 : x
  2. Step 2: Convert to fraction form
    64,989.90/89,638.04 = 41,093.55/x
  3. Step 3: Cross multiply
    64,989.90x = 89,638.04 × 41,093.55
  4. Step 4: Simplify right side
    64,989.90x = 3,683,545,381.38
  5. Step 5: Solve for x
    x = 3,683,545,381.38/64,989.90
  6. Step 6: Final answer
    x = 56,678.74

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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.