Home / 40,991.86-56,511.03-30,931.66

Finding the Fourth Proportional to 40,991.86, 56,511.03 and 30,931.66

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Solution

The fourth proportional to 40,991.86, 56,511.03 and 30,931.66 is: 42,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,991.86 : 56,511.03 = 30,931.66 : x
  2. Step 2: Convert to fraction form
    40,991.86/56,511.03 = 30,931.66/x
  3. Step 3: Cross multiply
    40,991.86x = 56,511.03 × 30,931.66
  4. Step 4: Simplify right side
    40,991.86x = 1,747,979,966.21
  5. Step 5: Solve for x
    x = 1,747,979,966.21/40,991.86
  6. Step 6: Final answer
    x = 42,642.12

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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.