Home / 85,117.32-117,475.90-64,936.12

Finding the Fourth Proportional to 85,117.32, 117,475.90 and 64,936.12

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Solution

The fourth proportional to 85,117.32, 117,475.90 and 64,936.12 is: 89,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,117.32 : 117,475.90 = 64,936.12 : x
  2. Step 2: Convert to fraction form
    85,117.32/117,475.90 = 64,936.12/x
  3. Step 3: Cross multiply
    85,117.32x = 117,475.90 × 64,936.12
  4. Step 4: Simplify right side
    85,117.32x = 7,628,429,139.51
  5. Step 5: Solve for x
    x = 7,628,429,139.51/85,117.32
  6. Step 6: Final answer
    x = 89,622.52

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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.