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Finding the Fourth Proportional to 89,846.40, 134,623.80 and 56,506.80

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Solution

The fourth proportional to 89,846.40, 134,623.80 and 56,506.80 is: 84,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,846.40 : 134,623.80 = 56,506.80 : x
  2. Step 2: Convert to fraction form
    89,846.40/134,623.80 = 56,506.80/x
  3. Step 3: Cross multiply
    89,846.40x = 134,623.80 × 56,506.80
  4. Step 4: Simplify right side
    89,846.40x = 7,607,160,141.84
  5. Step 5: Solve for x
    x = 7,607,160,141.84/89,846.40
  6. Step 6: Final answer
    x = 84,668.50

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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.