Home / 81,752.16-112,828-45,943.68

Finding the Fourth Proportional to 81,752.16, 112,828 and 45,943.68

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Solution

The fourth proportional to 81,752.16, 112,828 and 45,943.68 is: 63,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,752.16 : 112,828 = 45,943.68 : x
  2. Step 2: Convert to fraction form
    81,752.16/112,828 = 45,943.68/x
  3. Step 3: Cross multiply
    81,752.16x = 112,828 × 45,943.68
  4. Step 4: Simplify right side
    81,752.16x = 5,183,733,527.04
  5. Step 5: Solve for x
    x = 5,183,733,527.04/81,752.16
  6. Step 6: Final answer
    x = 63,407.91

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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.