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Finding the Fourth Proportional to 59,415.71, 81,963 and 40,289.01

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Solution

The fourth proportional to 59,415.71, 81,963 and 40,289.01 is: 55,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,415.71 : 81,963 = 40,289.01 : x
  2. Step 2: Convert to fraction form
    59,415.71/81,963 = 40,289.01/x
  3. Step 3: Cross multiply
    59,415.71x = 81,963 × 40,289.01
  4. Step 4: Simplify right side
    59,415.71x = 3,302,208,126.63
  5. Step 5: Solve for x
    x = 3,302,208,126.63/59,415.71
  6. Step 6: Final answer
    x = 55,578.03

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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.