Home / 56,369.09-77,790.20-30,877.81

Finding the Fourth Proportional to 56,369.09, 77,790.20 and 30,877.81

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Solution

The fourth proportional to 56,369.09, 77,790.20 and 30,877.81 is: 42,611.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,369.09 : 77,790.20 = 30,877.81 : x
  2. Step 2: Convert to fraction form
    56,369.09/77,790.20 = 30,877.81/x
  3. Step 3: Cross multiply
    56,369.09x = 77,790.20 × 30,877.81
  4. Step 4: Simplify right side
    56,369.09x = 2,401,990,666.60
  5. Step 5: Solve for x
    x = 2,401,990,666.60/56,369.09
  6. Step 6: Final answer
    x = 42,611.84

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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.