Home / 81,256.96-112,139.94-45,453.16

Finding the Fourth Proportional to 81,256.96, 112,139.94 and 45,453.16

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Solution

The fourth proportional to 81,256.96, 112,139.94 and 45,453.16 is: 62,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,256.96 : 112,139.94 = 45,453.16 : x
  2. Step 2: Convert to fraction form
    81,256.96/112,139.94 = 45,453.16/x
  3. Step 3: Cross multiply
    81,256.96x = 112,139.94 × 45,453.16
  4. Step 4: Simplify right side
    81,256.96x = 5,097,114,635.21
  5. Step 5: Solve for x
    x = 5,097,114,635.21/81,256.96
  6. Step 6: Final answer
    x = 62,728.35

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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.