Home / 78,441.36-108,247.66-42,631.48

Finding the Fourth Proportional to 78,441.36, 108,247.66 and 42,631.48

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Solution

The fourth proportional to 78,441.36, 108,247.66 and 42,631.48 is: 58,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,441.36 : 108,247.66 = 42,631.48 : x
  2. Step 2: Convert to fraction form
    78,441.36/108,247.66 = 42,631.48/x
  3. Step 3: Cross multiply
    78,441.36x = 108,247.66 × 42,631.48
  4. Step 4: Simplify right side
    78,441.36x = 4,614,757,952.34
  5. Step 5: Solve for x
    x = 4,614,757,952.34/78,441.36
  6. Step 6: Final answer
    x = 58,830.67

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1.5x scale

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.