Home / 89,815.32-134,389.08-56,378.88

Finding the Fourth Proportional to 89,815.32, 134,389.08 and 56,378.88

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Solution

The fourth proportional to 89,815.32, 134,389.08 and 56,378.88 is: 84,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,815.32 : 134,389.08 = 56,378.88 : x
  2. Step 2: Convert to fraction form
    89,815.32/134,389.08 = 56,378.88/x
  3. Step 3: Cross multiply
    89,815.32x = 134,389.08 × 56,378.88
  4. Step 4: Simplify right side
    89,815.32x = 7,576,705,814.63
  5. Step 5: Solve for x
    x = 7,576,705,814.63/89,815.32
  6. Step 6: Final answer
    x = 84,358.72

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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.