Home / 74,094.90-102,516.75-64,690.80

Finding the Fourth Proportional to 74,094.90, 102,516.75 and 64,690.80

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Solution

The fourth proportional to 74,094.90, 102,516.75 and 64,690.80 is: 89,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,094.90 : 102,516.75 = 64,690.80 : x
  2. Step 2: Convert to fraction form
    74,094.90/102,516.75 = 64,690.80/x
  3. Step 3: Cross multiply
    74,094.90x = 102,516.75 × 64,690.80
  4. Step 4: Simplify right side
    74,094.90x = 6,631,890,570.90
  5. Step 5: Solve for x
    x = 6,631,890,570.90/74,094.90
  6. Step 6: Final answer
    x = 89,505.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.