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Finding the Fourth Proportional to 94,978.98, 130,918.91 and 64,342.75

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Solution

The fourth proportional to 94,978.98, 130,918.91 and 64,342.75 is: 88,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,978.98 : 130,918.91 = 64,342.75 : x
  2. Step 2: Convert to fraction form
    94,978.98/130,918.91 = 64,342.75/x
  3. Step 3: Cross multiply
    94,978.98x = 130,918.91 × 64,342.75
  4. Step 4: Simplify right side
    94,978.98x = 8,423,682,696.40
  5. Step 5: Solve for x
    x = 8,423,682,696.40/94,978.98
  6. Step 6: Final answer
    x = 88,689.97

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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.