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Finding the Fourth Proportional to 77,017.55, 106,273.73 and 43,021.71

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Solution

The fourth proportional to 77,017.55, 106,273.73 and 43,021.71 is: 59,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,017.55 : 106,273.73 = 43,021.71 : x
  2. Step 2: Convert to fraction form
    77,017.55/106,273.73 = 43,021.71/x
  3. Step 3: Cross multiply
    77,017.55x = 106,273.73 × 43,021.71
  4. Step 4: Simplify right side
    77,017.55x = 4,572,077,377.57
  5. Step 5: Solve for x
    x = 4,572,077,377.57/77,017.55
  6. Step 6: Final answer
    x = 59,364.10

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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.