Home / 85,379.09-117,713.59-70,009.00

Finding the Fourth Proportional to 85,379.09, 117,713.59 and 70,009.00

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Solution

The fourth proportional to 85,379.09, 117,713.59 and 70,009.00 is: 96,522.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,379.09 : 117,713.59 = 70,009.00 : x
  2. Step 2: Convert to fraction form
    85,379.09/117,713.59 = 70,009.00/x
  3. Step 3: Cross multiply
    85,379.09x = 117,713.59 × 70,009.00
  4. Step 4: Simplify right side
    85,379.09x = 8,241,010,253.00
  5. Step 5: Solve for x
    x = 8,241,010,253.00/85,379.09
  6. Step 6: Final answer
    x = 96,522.59

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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.