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Finding the Fourth Proportional to 69,707.70, 103,980.90 and 62,980.85

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Solution

The fourth proportional to 69,707.70, 103,980.90 and 62,980.85 is: 93,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,707.70 : 103,980.90 = 62,980.85 : x
  2. Step 2: Convert to fraction form
    69,707.70/103,980.90 = 62,980.85/x
  3. Step 3: Cross multiply
    69,707.70x = 103,980.90 × 62,980.85
  4. Step 4: Simplify right side
    69,707.70x = 6,548,805,465.77
  5. Step 5: Solve for x
    x = 6,548,805,465.77/69,707.70
  6. Step 6: Final answer
    x = 93,946.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.