Home / 57,172.42-78,925.37-40,191.22

Finding the Fourth Proportional to 57,172.42, 78,925.37 and 40,191.22

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Solution

The fourth proportional to 57,172.42, 78,925.37 and 40,191.22 is: 55,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,172.42 : 78,925.37 = 40,191.22 : x
  2. Step 2: Convert to fraction form
    57,172.42/78,925.37 = 40,191.22/x
  3. Step 3: Cross multiply
    57,172.42x = 78,925.37 × 40,191.22
  4. Step 4: Simplify right side
    57,172.42x = 3,172,106,909.25
  5. Step 5: Solve for x
    x = 3,172,106,909.25/57,172.42
  6. Step 6: Final answer
    x = 55,483.17

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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.