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Finding the Fourth Proportional to 77,968.93, 107,599.08 and 47,770.90

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Solution

The fourth proportional to 77,968.93, 107,599.08 and 47,770.90 is: 65,925.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,968.93 : 107,599.08 = 47,770.90 : x
  2. Step 2: Convert to fraction form
    77,968.93/107,599.08 = 47,770.90/x
  3. Step 3: Cross multiply
    77,968.93x = 107,599.08 × 47,770.90
  4. Step 4: Simplify right side
    77,968.93x = 5,140,104,890.77
  5. Step 5: Solve for x
    x = 5,140,104,890.77/77,968.93
  6. Step 6: Final answer
    x = 65,925.04

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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.