Home / 76,439.71-105,483.27-42,450.36

Finding the Fourth Proportional to 76,439.71, 105,483.27 and 42,450.36

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Solution

The fourth proportional to 76,439.71, 105,483.27 and 42,450.36 is: 58,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,439.71 : 105,483.27 = 42,450.36 : x
  2. Step 2: Convert to fraction form
    76,439.71/105,483.27 = 42,450.36/x
  3. Step 3: Cross multiply
    76,439.71x = 105,483.27 × 42,450.36
  4. Step 4: Simplify right side
    76,439.71x = 4,477,802,258.06
  5. Step 5: Solve for x
    x = 4,477,802,258.06/76,439.71
  6. Step 6: Final answer
    x = 58,579.53

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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.