Home / 56,408.40-77,842.26-30,913.92

Finding the Fourth Proportional to 56,408.40, 77,842.26 and 30,913.92

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Solution

The fourth proportional to 56,408.40, 77,842.26 and 30,913.92 is: 42,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,408.40 : 77,842.26 = 30,913.92 : x
  2. Step 2: Convert to fraction form
    56,408.40/77,842.26 = 30,913.92/x
  3. Step 3: Cross multiply
    56,408.40x = 77,842.26 × 30,913.92
  4. Step 4: Simplify right side
    56,408.40x = 2,406,409,398.26
  5. Step 5: Solve for x
    x = 2,406,409,398.26/56,408.40
  6. Step 6: Final answer
    x = 42,660.48

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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.