Home / 78,060.42-117,090.93-18,895.99

Finding the Fourth Proportional to 78,060.42, 117,090.93 and 18,895.99

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Solution

The fourth proportional to 78,060.42, 117,090.93 and 18,895.99 is: 28,344.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.42 : 117,090.93 = 18,895.99 : x
  2. Step 2: Convert to fraction form
    78,060.42/117,090.93 = 18,895.99/x
  3. Step 3: Cross multiply
    78,060.42x = 117,090.93 × 18,895.99
  4. Step 4: Simplify right side
    78,060.42x = 2,212,549,042.37
  5. Step 5: Solve for x
    x = 2,212,549,042.37/78,060.42
  6. Step 6: Final answer
    x = 28,344.06

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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.