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Finding the Fourth Proportional to 89,671.77, 134,445.15 and 39,724.74

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Solution

The fourth proportional to 89,671.77, 134,445.15 and 39,724.74 is: 59,559.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,671.77 : 134,445.15 = 39,724.74 : x
  2. Step 2: Convert to fraction form
    89,671.77/134,445.15 = 39,724.74/x
  3. Step 3: Cross multiply
    89,671.77x = 134,445.15 × 39,724.74
  4. Step 4: Simplify right side
    89,671.77x = 5,340,798,628.01
  5. Step 5: Solve for x
    x = 5,340,798,628.01/89,671.77
  6. Step 6: Final answer
    x = 59,559.42

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1.5x scale

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.