Home / 56,385.45-77,811.26-30,543.51

Finding the Fourth Proportional to 56,385.45, 77,811.26 and 30,543.51

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Solution

The fourth proportional to 56,385.45, 77,811.26 and 30,543.51 is: 42,149.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,385.45 : 77,811.26 = 30,543.51 : x
  2. Step 2: Convert to fraction form
    56,385.45/77,811.26 = 30,543.51/x
  3. Step 3: Cross multiply
    56,385.45x = 77,811.26 × 30,543.51
  4. Step 4: Simplify right side
    56,385.45x = 2,376,628,997.92
  5. Step 5: Solve for x
    x = 2,376,628,997.92/56,385.45
  6. Step 6: Final answer
    x = 42,149.69

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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.