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Finding the Fourth Proportional to 78,299.34, 108,051.59 and 44,307.21

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Solution

The fourth proportional to 78,299.34, 108,051.59 and 44,307.21 is: 61,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.34 : 108,051.59 = 44,307.21 : x
  2. Step 2: Convert to fraction form
    78,299.34/108,051.59 = 44,307.21/x
  3. Step 3: Cross multiply
    78,299.34x = 108,051.59 × 44,307.21
  4. Step 4: Simplify right side
    78,299.34x = 4,787,464,488.96
  5. Step 5: Solve for x
    x = 4,787,464,488.96/78,299.34
  6. Step 6: Final answer
    x = 61,143.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.