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Finding the Fourth Proportional to 61,315.80, 91,973.70 and 50,947.80

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Solution

The fourth proportional to 61,315.80, 91,973.70 and 50,947.80 is: 76,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,315.80 : 91,973.70 = 50,947.80 : x
  2. Step 2: Convert to fraction form
    61,315.80/91,973.70 = 50,947.80/x
  3. Step 3: Cross multiply
    61,315.80x = 91,973.70 × 50,947.80
  4. Step 4: Simplify right side
    61,315.80x = 4,685,857,672.86
  5. Step 5: Solve for x
    x = 4,685,857,672.86/61,315.80
  6. Step 6: Final answer
    x = 76,421.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.