Home / 85,284.80-117,722.40-51,312.32

Finding the Fourth Proportional to 85,284.80, 117,722.40 and 51,312.32

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Solution

The fourth proportional to 85,284.80, 117,722.40 and 51,312.32 is: 70,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,284.80 : 117,722.40 = 51,312.32 : x
  2. Step 2: Convert to fraction form
    85,284.80/117,722.40 = 51,312.32/x
  3. Step 3: Cross multiply
    85,284.80x = 117,722.40 × 51,312.32
  4. Step 4: Simplify right side
    85,284.80x = 6,040,609,459.97
  5. Step 5: Solve for x
    x = 6,040,609,459.97/85,284.80
  6. Step 6: Final answer
    x = 70,828.68

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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.