Home / 65,804.16-90,815.52-38,933.12

Finding the Fourth Proportional to 65,804.16, 90,815.52 and 38,933.12

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Solution

The fourth proportional to 65,804.16, 90,815.52 and 38,933.12 is: 53,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,804.16 : 90,815.52 = 38,933.12 : x
  2. Step 2: Convert to fraction form
    65,804.16/90,815.52 = 38,933.12/x
  3. Step 3: Cross multiply
    65,804.16x = 90,815.52 × 38,933.12
  4. Step 4: Simplify right side
    65,804.16x = 3,535,731,538.02
  5. Step 5: Solve for x
    x = 3,535,731,538.02/65,804.16
  6. Step 6: Final answer
    x = 53,731.12

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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.