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Finding the Fourth Proportional to 69,980.10, 104,931.62 and 47,818.50

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Solution

The fourth proportional to 69,980.10, 104,931.62 and 47,818.50 is: 71,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,980.10 : 104,931.62 = 47,818.50 : x
  2. Step 2: Convert to fraction form
    69,980.10/104,931.62 = 47,818.50/x
  3. Step 3: Cross multiply
    69,980.10x = 104,931.62 × 47,818.50
  4. Step 4: Simplify right side
    69,980.10x = 5,017,672,670.97
  5. Step 5: Solve for x
    x = 5,017,672,670.97/69,980.10
  6. Step 6: Final answer
    x = 71,701.42

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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.