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Finding the Fourth Proportional to 91,273.47, 125,814.49 and 83,941.55

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Solution

The fourth proportional to 91,273.47, 125,814.49 and 83,941.55 is: 115,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,273.47 : 125,814.49 = 83,941.55 : x
  2. Step 2: Convert to fraction form
    91,273.47/125,814.49 = 83,941.55/x
  3. Step 3: Cross multiply
    91,273.47x = 125,814.49 × 83,941.55
  4. Step 4: Simplify right side
    91,273.47x = 10,561,063,303.06
  5. Step 5: Solve for x
    x = 10,561,063,303.06/91,273.47
  6. Step 6: Final answer
    x = 115,707.92

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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.