Home / 89,316.08-133,880.48-30,131.36

Finding the Fourth Proportional to 89,316.08, 133,880.48 and 30,131.36

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Solution

The fourth proportional to 89,316.08, 133,880.48 and 30,131.36 is: 45,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,316.08 : 133,880.48 = 30,131.36 : x
  2. Step 2: Convert to fraction form
    89,316.08/133,880.48 = 30,131.36/x
  3. Step 3: Cross multiply
    89,316.08x = 133,880.48 × 30,131.36
  4. Step 4: Simplify right side
    89,316.08x = 4,034,000,939.85
  5. Step 5: Solve for x
    x = 4,034,000,939.85/89,316.08
  6. Step 6: Final answer
    x = 45,165.45

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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.