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Finding the Fourth Proportional to 89,485.68, 123,483.88 and 49,198.40

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Solution

The fourth proportional to 89,485.68, 123,483.88 and 49,198.40 is: 67,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,485.68 : 123,483.88 = 49,198.40 : x
  2. Step 2: Convert to fraction form
    89,485.68/123,483.88 = 49,198.40/x
  3. Step 3: Cross multiply
    89,485.68x = 123,483.88 × 49,198.40
  4. Step 4: Simplify right side
    89,485.68x = 6,075,209,321.79
  5. Step 5: Solve for x
    x = 6,075,209,321.79/89,485.68
  6. Step 6: Final answer
    x = 67,890.30

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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.