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Finding the Fourth Proportional to 89,868.69, 134,885.79 and 45,526.32

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Solution

The fourth proportional to 89,868.69, 134,885.79 and 45,526.32 is: 68,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,868.69 : 134,885.79 = 45,526.32 : x
  2. Step 2: Convert to fraction form
    89,868.69/134,885.79 = 45,526.32/x
  3. Step 3: Cross multiply
    89,868.69x = 134,885.79 × 45,526.32
  4. Step 4: Simplify right side
    89,868.69x = 6,140,853,638.99
  5. Step 5: Solve for x
    x = 6,140,853,638.99/89,868.69
  6. Step 6: Final answer
    x = 68,331.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.