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Finding the Fourth Proportional to 92,770.86, 128,019.86 and 52,485.31

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Solution

The fourth proportional to 92,770.86, 128,019.86 and 52,485.31 is: 72,427.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,770.86 : 128,019.86 = 52,485.31 : x
  2. Step 2: Convert to fraction form
    92,770.86/128,019.86 = 52,485.31/x
  3. Step 3: Cross multiply
    92,770.86x = 128,019.86 × 52,485.31
  4. Step 4: Simplify right side
    92,770.86x = 6,719,161,135.73
  5. Step 5: Solve for x
    x = 6,719,161,135.73/92,770.86
  6. Step 6: Final answer
    x = 72,427.50

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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.