Home / 78,060.23-117,090.65-18,895.81

Finding the Fourth Proportional to 78,060.23, 117,090.65 and 18,895.81

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Solution

The fourth proportional to 78,060.23, 117,090.65 and 18,895.81 is: 28,343.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.23 : 117,090.65 = 18,895.81 : x
  2. Step 2: Convert to fraction form
    78,060.23/117,090.65 = 18,895.81/x
  3. Step 3: Cross multiply
    78,060.23x = 117,090.65 × 18,895.81
  4. Step 4: Simplify right side
    78,060.23x = 2,212,521,995.24
  5. Step 5: Solve for x
    x = 2,212,521,995.24/78,060.23
  6. Step 6: Final answer
    x = 28,343.78

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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.