Home / 81,386.22-112,307.54-45,085.21

Finding the Fourth Proportional to 81,386.22, 112,307.54 and 45,085.21

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Solution

The fourth proportional to 81,386.22, 112,307.54 and 45,085.21 is: 62,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,386.22 : 112,307.54 = 45,085.21 : x
  2. Step 2: Convert to fraction form
    81,386.22/112,307.54 = 45,085.21/x
  3. Step 3: Cross multiply
    81,386.22x = 112,307.54 × 45,085.21
  4. Step 4: Simplify right side
    81,386.22x = 5,063,409,025.48
  5. Step 5: Solve for x
    x = 5,063,409,025.48/81,386.22
  6. Step 6: Final answer
    x = 62,214.57

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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.