Home / 78,378.98-117,559.35-27,772.25

Finding the Fourth Proportional to 78,378.98, 117,559.35 and 27,772.25

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Solution

The fourth proportional to 78,378.98, 117,559.35 and 27,772.25 is: 41,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,378.98 : 117,559.35 = 27,772.25 : x
  2. Step 2: Convert to fraction form
    78,378.98/117,559.35 = 27,772.25/x
  3. Step 3: Cross multiply
    78,378.98x = 117,559.35 × 27,772.25
  4. Step 4: Simplify right side
    78,378.98x = 3,264,887,070.24
  5. Step 5: Solve for x
    x = 3,264,887,070.24/78,378.98
  6. Step 6: Final answer
    x = 41,655.14

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1.5x scale

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.