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Finding the Fourth Proportional to 78,416.58, 108,211.32 and 44,424.30

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Solution

The fourth proportional to 78,416.58, 108,211.32 and 44,424.30 is: 61,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.58 : 108,211.32 = 44,424.30 : x
  2. Step 2: Convert to fraction form
    78,416.58/108,211.32 = 44,424.30/x
  3. Step 3: Cross multiply
    78,416.58x = 108,211.32 × 44,424.30
  4. Step 4: Simplify right side
    78,416.58x = 4,807,212,143.08
  5. Step 5: Solve for x
    x = 4,807,212,143.08/78,416.58
  6. Step 6: Final answer
    x = 61,303.52

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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.