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Finding the Fourth Proportional to 60,307.16, 90,516.78 and 30,747.20

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Solution

The fourth proportional to 60,307.16, 90,516.78 and 30,747.20 is: 46,149.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,307.16 : 90,516.78 = 30,747.20 : x
  2. Step 2: Convert to fraction form
    60,307.16/90,516.78 = 30,747.20/x
  3. Step 3: Cross multiply
    60,307.16x = 90,516.78 × 30,747.20
  4. Step 4: Simplify right side
    60,307.16x = 2,783,137,538.02
  5. Step 5: Solve for x
    x = 2,783,137,538.02/60,307.16
  6. Step 6: Final answer
    x = 46,149.37

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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.