Home / 72,121.41-99,507.69-46,642.68

Finding the Fourth Proportional to 72,121.41, 99,507.69 and 46,642.68

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Solution

The fourth proportional to 72,121.41, 99,507.69 and 46,642.68 is: 64,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,121.41 : 99,507.69 = 46,642.68 : x
  2. Step 2: Convert to fraction form
    72,121.41/99,507.69 = 46,642.68/x
  3. Step 3: Cross multiply
    72,121.41x = 99,507.69 × 46,642.68
  4. Step 4: Simplify right side
    72,121.41x = 4,641,305,342.21
  5. Step 5: Solve for x
    x = 4,641,305,342.21/72,121.41
  6. Step 6: Final answer
    x = 64,354.06

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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.