Home / 78,126.26-107,814.24-42,316.16

Finding the Fourth Proportional to 78,126.26, 107,814.24 and 42,316.16

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Solution

The fourth proportional to 78,126.26, 107,814.24 and 42,316.16 is: 58,396.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.26 : 107,814.24 = 42,316.16 : x
  2. Step 2: Convert to fraction form
    78,126.26/107,814.24 = 42,316.16/x
  3. Step 3: Cross multiply
    78,126.26x = 107,814.24 × 42,316.16
  4. Step 4: Simplify right side
    78,126.26x = 4,562,284,091.05
  5. Step 5: Solve for x
    x = 4,562,284,091.05/78,126.26
  6. Step 6: Final answer
    x = 58,396.30

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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.