Home / 78,720.09-108,643.01-44,739.12

Finding the Fourth Proportional to 78,720.09, 108,643.01 and 44,739.12

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Solution

The fourth proportional to 78,720.09, 108,643.01 and 44,739.12 is: 61,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,720.09 : 108,643.01 = 44,739.12 : x
  2. Step 2: Convert to fraction form
    78,720.09/108,643.01 = 44,739.12/x
  3. Step 3: Cross multiply
    78,720.09x = 108,643.01 × 44,739.12
  4. Step 4: Simplify right side
    78,720.09x = 4,860,592,661.55
  5. Step 5: Solve for x
    x = 4,860,592,661.55/78,720.09
  6. Step 6: Final answer
    x = 61,745.26

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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.