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Finding the Fourth Proportional to 89,807.40, 134,856.90 and 60,355.80

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Solution

The fourth proportional to 89,807.40, 134,856.90 and 60,355.80 is: 90,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,807.40 : 134,856.90 = 60,355.80 : x
  2. Step 2: Convert to fraction form
    89,807.40/134,856.90 = 60,355.80/x
  3. Step 3: Cross multiply
    89,807.40x = 134,856.90 × 60,355.80
  4. Step 4: Simplify right side
    89,807.40x = 8,139,396,085.02
  5. Step 5: Solve for x
    x = 8,139,396,085.02/89,807.40
  6. Step 6: Final answer
    x = 90,631.69

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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.