Home / 85,816.51-118,402.36-49,999.60

Finding the Fourth Proportional to 85,816.51, 118,402.36 and 49,999.60

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Solution

The fourth proportional to 85,816.51, 118,402.36 and 49,999.60 is: 68,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,816.51 : 118,402.36 = 49,999.60 : x
  2. Step 2: Convert to fraction form
    85,816.51/118,402.36 = 49,999.60/x
  3. Step 3: Cross multiply
    85,816.51x = 118,402.36 × 49,999.60
  4. Step 4: Simplify right side
    85,816.51x = 5,920,070,995.07
  5. Step 5: Solve for x
    x = 5,920,070,995.07/85,816.51
  6. Step 6: Final answer
    x = 68,985.22

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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.