Home / 72,171.79-99,594.39-40,341.22

Finding the Fourth Proportional to 72,171.79, 99,594.39 and 40,341.22

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Solution

The fourth proportional to 72,171.79, 99,594.39 and 40,341.22 is: 55,669.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171.79 : 99,594.39 = 40,341.22 : x
  2. Step 2: Convert to fraction form
    72,171.79/99,594.39 = 40,341.22/x
  3. Step 3: Cross multiply
    72,171.79x = 99,594.39 × 40,341.22
  4. Step 4: Simplify right side
    72,171.79x = 4,017,759,100.05
  5. Step 5: Solve for x
    x = 4,017,759,100.05/72,171.79
  6. Step 6: Final answer
    x = 55,669.39

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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.