Home / 72,307.50-108,418.05-30,136.74

Finding the Fourth Proportional to 72,307.50, 108,418.05 and 30,136.74

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Solution

The fourth proportional to 72,307.50, 108,418.05 and 30,136.74 is: 45,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307.50 : 108,418.05 = 30,136.74 : x
  2. Step 2: Convert to fraction form
    72,307.50/108,418.05 = 30,136.74/x
  3. Step 3: Cross multiply
    72,307.50x = 108,418.05 × 30,136.74
  4. Step 4: Simplify right side
    72,307.50x = 3,267,366,584.16
  5. Step 5: Solve for x
    x = 3,267,366,584.16/72,307.50
  6. Step 6: Final answer
    x = 45,187.10

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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.