Home / 57,076.50-78,762.78-31,582.39

Finding the Fourth Proportional to 57,076.50, 78,762.78 and 31,582.39

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Solution

The fourth proportional to 57,076.50, 78,762.78 and 31,582.39 is: 43,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.50 : 78,762.78 = 31,582.39 : x
  2. Step 2: Convert to fraction form
    57,076.50/78,762.78 = 31,582.39/x
  3. Step 3: Cross multiply
    57,076.50x = 78,762.78 × 31,582.39
  4. Step 4: Simplify right side
    57,076.50x = 2,487,516,786.22
  5. Step 5: Solve for x
    x = 2,487,516,786.22/57,076.50
  6. Step 6: Final answer
    x = 43,582.15

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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.