Home / 81,400.51-112,333.54-45,103.06

Finding the Fourth Proportional to 81,400.51, 112,333.54 and 45,103.06

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Solution

The fourth proportional to 81,400.51, 112,333.54 and 45,103.06 is: 62,242.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,400.51 : 112,333.54 = 45,103.06 : x
  2. Step 2: Convert to fraction form
    81,400.51/112,333.54 = 45,103.06/x
  3. Step 3: Cross multiply
    81,400.51x = 112,333.54 × 45,103.06
  4. Step 4: Simplify right side
    81,400.51x = 5,066,586,394.63
  5. Step 5: Solve for x
    x = 5,066,586,394.63/81,400.51
  6. Step 6: Final answer
    x = 62,242.69

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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.