Home / 85,501.36-117,991.51-47,775.61

Finding the Fourth Proportional to 85,501.36, 117,991.51 and 47,775.61

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Solution

The fourth proportional to 85,501.36, 117,991.51 and 47,775.61 is: 65,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.36 : 117,991.51 = 47,775.61 : x
  2. Step 2: Convert to fraction form
    85,501.36/117,991.51 = 47,775.61/x
  3. Step 3: Cross multiply
    85,501.36x = 117,991.51 × 47,775.61
  4. Step 4: Simplify right side
    85,501.36x = 5,637,116,365.07
  5. Step 5: Solve for x
    x = 5,637,116,365.07/85,501.36
  6. Step 6: Final answer
    x = 65,930.14

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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.