Home / 81,730.90-112,742.59-51,464.23

Finding the Fourth Proportional to 81,730.90, 112,742.59 and 51,464.23

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Solution

The fourth proportional to 81,730.90, 112,742.59 and 51,464.23 is: 70,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,730.90 : 112,742.59 = 51,464.23 : x
  2. Step 2: Convert to fraction form
    81,730.90/112,742.59 = 51,464.23/x
  3. Step 3: Cross multiply
    81,730.90x = 112,742.59 × 51,464.23
  4. Step 4: Simplify right side
    81,730.90x = 5,802,210,582.56
  5. Step 5: Solve for x
    x = 5,802,210,582.56/81,730.90
  6. Step 6: Final answer
    x = 70,991.64

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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.