Home / 81,237.09-112,117.62-45,429.11

Finding the Fourth Proportional to 81,237.09, 112,117.62 and 45,429.11

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Solution

The fourth proportional to 81,237.09, 112,117.62 and 45,429.11 is: 62,698.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,237.09 : 112,117.62 = 45,429.11 : x
  2. Step 2: Convert to fraction form
    81,237.09/112,117.62 = 45,429.11/x
  3. Step 3: Cross multiply
    81,237.09x = 112,117.62 × 45,429.11
  4. Step 4: Simplify right side
    81,237.09x = 5,093,403,131.33
  5. Step 5: Solve for x
    x = 5,093,403,131.33/81,237.09
  6. Step 6: Final answer
    x = 62,698.00

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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.