Home / 89,289.20-133,715.10-42,487.40

Finding the Fourth Proportional to 89,289.20, 133,715.10 and 42,487.40

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Solution

The fourth proportional to 89,289.20, 133,715.10 and 42,487.40 is: 63,627.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,289.20 : 133,715.10 = 42,487.40 : x
  2. Step 2: Convert to fraction form
    89,289.20/133,715.10 = 42,487.40/x
  3. Step 3: Cross multiply
    89,289.20x = 133,715.10 × 42,487.40
  4. Step 4: Simplify right side
    89,289.20x = 5,681,206,939.74
  5. Step 5: Solve for x
    x = 5,681,206,939.74/89,289.20
  6. Step 6: Final answer
    x = 63,627.03

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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.