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Finding the Fourth Proportional to 89,590.40, 134,270.40 and 68,710.40

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Solution

The fourth proportional to 89,590.40, 134,270.40 and 68,710.40 is: 102,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,590.40 : 134,270.40 = 68,710.40 : x
  2. Step 2: Convert to fraction form
    89,590.40/134,270.40 = 68,710.40/x
  3. Step 3: Cross multiply
    89,590.40x = 134,270.40 × 68,710.40
  4. Step 4: Simplify right side
    89,590.40x = 9,225,772,892.16
  5. Step 5: Solve for x
    x = 9,225,772,892.16/89,590.40
  6. Step 6: Final answer
    x = 102,977.25

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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.