Home / 78,494.04-117,739.98-19,330.20

Finding the Fourth Proportional to 78,494.04, 117,739.98 and 19,330.20

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Solution

The fourth proportional to 78,494.04, 117,739.98 and 19,330.20 is: 28,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,494.04 : 117,739.98 = 19,330.20 : x
  2. Step 2: Convert to fraction form
    78,494.04/117,739.98 = 19,330.20/x
  3. Step 3: Cross multiply
    78,494.04x = 117,739.98 × 19,330.20
  4. Step 4: Simplify right side
    78,494.04x = 2,275,937,361.40
  5. Step 5: Solve for x
    x = 2,275,937,361.40/78,494.04
  6. Step 6: Final answer
    x = 28,995.03

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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.