Home / 72,170.08-99,594.42-40,338.94

Finding the Fourth Proportional to 72,170.08, 99,594.42 and 40,338.94

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Solution

The fourth proportional to 72,170.08, 99,594.42 and 40,338.94 is: 55,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.08 : 99,594.42 = 40,338.94 : x
  2. Step 2: Convert to fraction form
    72,170.08/99,594.42 = 40,338.94/x
  3. Step 3: Cross multiply
    72,170.08x = 99,594.42 × 40,338.94
  4. Step 4: Simplify right side
    72,170.08x = 4,017,533,332.71
  5. Step 5: Solve for x
    x = 4,017,533,332.71/72,170.08
  6. Step 6: Final answer
    x = 55,667.57

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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.