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Finding the Fourth Proportional to 92,779.92, 128,036.64 and 50,338.56

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Solution

The fourth proportional to 92,779.92, 128,036.64 and 50,338.56 is: 69,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,779.92 : 128,036.64 = 50,338.56 : x
  2. Step 2: Convert to fraction form
    92,779.92/128,036.64 = 50,338.56/x
  3. Step 3: Cross multiply
    92,779.92x = 128,036.64 × 50,338.56
  4. Step 4: Simplify right side
    92,779.92x = 6,445,180,084.84
  5. Step 5: Solve for x
    x = 6,445,180,084.84/92,779.92
  6. Step 6: Final answer
    x = 69,467.40

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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.