Home / 89,725.44-123,802.56-61,420.80

Finding the Fourth Proportional to 89,725.44, 123,802.56 and 61,420.80

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Solution

The fourth proportional to 89,725.44, 123,802.56 and 61,420.80 is: 84,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,725.44 : 123,802.56 = 61,420.80 : x
  2. Step 2: Convert to fraction form
    89,725.44/123,802.56 = 61,420.80/x
  3. Step 3: Cross multiply
    89,725.44x = 123,802.56 × 61,420.80
  4. Step 4: Simplify right side
    89,725.44x = 7,604,052,277.25
  5. Step 5: Solve for x
    x = 7,604,052,277.25/89,725.44
  6. Step 6: Final answer
    x = 84,748.01

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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.