Home / 81,253.51-112,135.03-45,443.79

Finding the Fourth Proportional to 81,253.51, 112,135.03 and 45,443.79

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Solution

The fourth proportional to 81,253.51, 112,135.03 and 45,443.79 is: 62,715.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,253.51 : 112,135.03 = 45,443.79 : x
  2. Step 2: Convert to fraction form
    81,253.51/112,135.03 = 45,443.79/x
  3. Step 3: Cross multiply
    81,253.51x = 112,135.03 × 45,443.79
  4. Step 4: Simplify right side
    81,253.51x = 5,095,840,641.35
  5. Step 5: Solve for x
    x = 5,095,840,641.35/81,253.51
  6. Step 6: Final answer
    x = 62,715.33

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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.