Home / 57,235.68-78,985.89-31,742.55

Finding the Fourth Proportional to 57,235.68, 78,985.89 and 31,742.55

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Solution

The fourth proportional to 57,235.68, 78,985.89 and 31,742.55 is: 43,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,235.68 : 78,985.89 = 31,742.55 : x
  2. Step 2: Convert to fraction form
    57,235.68/78,985.89 = 31,742.55/x
  3. Step 3: Cross multiply
    57,235.68x = 78,985.89 × 31,742.55
  4. Step 4: Simplify right side
    57,235.68x = 2,507,213,562.62
  5. Step 5: Solve for x
    x = 2,507,213,562.62/57,235.68
  6. Step 6: Final answer
    x = 43,805.08

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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.