Home / 91,671.94-137,320.76-47,205.36

Finding the Fourth Proportional to 91,671.94, 137,320.76 and 47,205.36

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Solution

The fourth proportional to 91,671.94, 137,320.76 and 47,205.36 is: 70,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.94 : 137,320.76 = 47,205.36 : x
  2. Step 2: Convert to fraction form
    91,671.94/137,320.76 = 47,205.36/x
  3. Step 3: Cross multiply
    91,671.94x = 137,320.76 × 47,205.36
  4. Step 4: Simplify right side
    91,671.94x = 6,482,275,911.27
  5. Step 5: Solve for x
    x = 6,482,275,911.27/91,671.94
  6. Step 6: Final answer
    x = 70,711.67

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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.