Home / 42,191.75-58,272.45-28,739.68

Finding the Fourth Proportional to 42,191.75, 58,272.45 and 28,739.68

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Solution

The fourth proportional to 42,191.75, 58,272.45 and 28,739.68 is: 39,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,191.75 : 58,272.45 = 28,739.68 : x
  2. Step 2: Convert to fraction form
    42,191.75/58,272.45 = 28,739.68/x
  3. Step 3: Cross multiply
    42,191.75x = 58,272.45 × 28,739.68
  4. Step 4: Simplify right side
    42,191.75x = 1,674,731,565.82
  5. Step 5: Solve for x
    x = 1,674,731,565.82/42,191.75
  6. Step 6: Final answer
    x = 39,693.34

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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.