Home / 78,051.34-117,077.02-18,887.02

Finding the Fourth Proportional to 78,051.34, 117,077.02 and 18,887.02

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Solution

The fourth proportional to 78,051.34, 117,077.02 and 18,887.02 is: 28,330.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,051.34 : 117,077.02 = 18,887.02 : x
  2. Step 2: Convert to fraction form
    78,051.34/117,077.02 = 18,887.02/x
  3. Step 3: Cross multiply
    78,051.34x = 117,077.02 × 18,887.02
  4. Step 4: Simplify right side
    78,051.34x = 2,211,235,678.37
  5. Step 5: Solve for x
    x = 2,211,235,678.37/78,051.34
  6. Step 6: Final answer
    x = 28,330.53

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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.