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Finding the Fourth Proportional to 70,791.59, 97,681.20 and 40,571.09

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Solution

The fourth proportional to 70,791.59, 97,681.20 and 40,571.09 is: 55,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,791.59 : 97,681.20 = 40,571.09 : x
  2. Step 2: Convert to fraction form
    70,791.59/97,681.20 = 40,571.09/x
  3. Step 3: Cross multiply
    70,791.59x = 97,681.20 × 40,571.09
  4. Step 4: Simplify right side
    70,791.59x = 3,963,032,756.51
  5. Step 5: Solve for x
    x = 3,963,032,756.51/70,791.59
  6. Step 6: Final answer
    x = 55,981.69

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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.