Home / 75,123.47-103,670.03-40,668.23

Finding the Fourth Proportional to 75,123.47, 103,670.03 and 40,668.23

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Solution

The fourth proportional to 75,123.47, 103,670.03 and 40,668.23 is: 56,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,123.47 : 103,670.03 = 40,668.23 : x
  2. Step 2: Convert to fraction form
    75,123.47/103,670.03 = 40,668.23/x
  3. Step 3: Cross multiply
    75,123.47x = 103,670.03 × 40,668.23
  4. Step 4: Simplify right side
    75,123.47x = 4,216,076,984.99
  5. Step 5: Solve for x
    x = 4,216,076,984.99/75,123.47
  6. Step 6: Final answer
    x = 56,121.97

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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.