Home / 89,656.24-123,720.66-49,368.40

Finding the Fourth Proportional to 89,656.24, 123,720.66 and 49,368.40

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Solution

The fourth proportional to 89,656.24, 123,720.66 and 49,368.40 is: 68,125.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,656.24 : 123,720.66 = 49,368.40 : x
  2. Step 2: Convert to fraction form
    89,656.24/123,720.66 = 49,368.40/x
  3. Step 3: Cross multiply
    89,656.24x = 123,720.66 × 49,368.40
  4. Step 4: Simplify right side
    89,656.24x = 6,107,891,031.14
  5. Step 5: Solve for x
    x = 6,107,891,031.14/89,656.24
  6. Step 6: Final answer
    x = 68,125.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.