Home / 81,290.32-112,184.99-45,478.19

Finding the Fourth Proportional to 81,290.32, 112,184.99 and 45,478.19

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Solution

The fourth proportional to 81,290.32, 112,184.99 and 45,478.19 is: 62,762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,290.32 : 112,184.99 = 45,478.19 : x
  2. Step 2: Convert to fraction form
    81,290.32/112,184.99 = 45,478.19/x
  3. Step 3: Cross multiply
    81,290.32x = 112,184.99 × 45,478.19
  4. Step 4: Simplify right side
    81,290.32x = 5,101,970,290.37
  5. Step 5: Solve for x
    x = 5,101,970,290.37/81,290.32
  6. Step 6: Final answer
    x = 62,762.33

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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.