Home / 72,701.94-100,325.75-40,870.16

Finding the Fourth Proportional to 72,701.94, 100,325.75 and 40,870.16

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Solution

The fourth proportional to 72,701.94, 100,325.75 and 40,870.16 is: 56,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,701.94 : 100,325.75 = 40,870.16 : x
  2. Step 2: Convert to fraction form
    72,701.94/100,325.75 = 40,870.16/x
  3. Step 3: Cross multiply
    72,701.94x = 100,325.75 × 40,870.16
  4. Step 4: Simplify right side
    72,701.94x = 4,100,329,454.62
  5. Step 5: Solve for x
    x = 4,100,329,454.62/72,701.94
  6. Step 6: Final answer
    x = 56,399.18

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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.