Home / 81,127.14-111,944.32-45,312.58

Finding the Fourth Proportional to 81,127.14, 111,944.32 and 45,312.58

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Solution

The fourth proportional to 81,127.14, 111,944.32 and 45,312.58 is: 62,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,127.14 : 111,944.32 = 45,312.58 : x
  2. Step 2: Convert to fraction form
    81,127.14/111,944.32 = 45,312.58/x
  3. Step 3: Cross multiply
    81,127.14x = 111,944.32 × 45,312.58
  4. Step 4: Simplify right side
    81,127.14x = 5,072,485,955.55
  5. Step 5: Solve for x
    x = 5,072,485,955.55/81,127.14
  6. Step 6: Final answer
    x = 62,525.14

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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.