Home / 72,979.04-100,509.66-62,903.72

Finding the Fourth Proportional to 72,979.04, 100,509.66 and 62,903.72

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Solution

The fourth proportional to 72,979.04, 100,509.66 and 62,903.72 is: 86,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,979.04 : 100,509.66 = 62,903.72 : x
  2. Step 2: Convert to fraction form
    72,979.04/100,509.66 = 62,903.72/x
  3. Step 3: Cross multiply
    72,979.04x = 100,509.66 × 62,903.72
  4. Step 4: Simplify right side
    72,979.04x = 6,322,431,509.94
  5. Step 5: Solve for x
    x = 6,322,431,509.94/72,979.04
  6. Step 6: Final answer
    x = 86,633.53

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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.