Home / 85,014.64-117,344.92-56,720.28

Finding the Fourth Proportional to 85,014.64, 117,344.92 and 56,720.28

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Solution

The fourth proportional to 85,014.64, 117,344.92 and 56,720.28 is: 78,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,014.64 : 117,344.92 = 56,720.28 : x
  2. Step 2: Convert to fraction form
    85,014.64/117,344.92 = 56,720.28/x
  3. Step 3: Cross multiply
    85,014.64x = 117,344.92 × 56,720.28
  4. Step 4: Simplify right side
    85,014.64x = 6,655,836,718.98
  5. Step 5: Solve for x
    x = 6,655,836,718.98/85,014.64
  6. Step 6: Final answer
    x = 78,290.48

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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.