Home / 85,371.07-117,702.55-70,000.98

Finding the Fourth Proportional to 85,371.07, 117,702.55 and 70,000.98

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Solution

The fourth proportional to 85,371.07, 117,702.55 and 70,000.98 is: 96,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,371.07 : 117,702.55 = 70,000.98 : x
  2. Step 2: Convert to fraction form
    85,371.07/117,702.55 = 70,000.98/x
  3. Step 3: Cross multiply
    85,371.07x = 117,702.55 × 70,000.98
  4. Step 4: Simplify right side
    85,371.07x = 8,239,293,967.75
  5. Step 5: Solve for x
    x = 8,239,293,967.75/85,371.07
  6. Step 6: Final answer
    x = 96,511.55

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1.5x scale

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.