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Finding the Fourth Proportional to 89,491.65, 123,501.65 and 49,208.48

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Solution

The fourth proportional to 89,491.65, 123,501.65 and 49,208.48 is: 67,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,491.65 : 123,501.65 = 49,208.48 : x
  2. Step 2: Convert to fraction form
    89,491.65/123,501.65 = 49,208.48/x
  3. Step 3: Cross multiply
    89,491.65x = 123,501.65 × 49,208.48
  4. Step 4: Simplify right side
    89,491.65x = 6,077,328,473.99
  5. Step 5: Solve for x
    x = 6,077,328,473.99/89,491.65
  6. Step 6: Final answer
    x = 67,909.45

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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.