Home / 40,860.13-56,389.40-30,770.77

Finding the Fourth Proportional to 40,860.13, 56,389.40 and 30,770.77

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Solution

The fourth proportional to 40,860.13, 56,389.40 and 30,770.77 is: 42,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,860.13 : 56,389.40 = 30,770.77 : x
  2. Step 2: Convert to fraction form
    40,860.13/56,389.40 = 30,770.77/x
  3. Step 3: Cross multiply
    40,860.13x = 56,389.40 × 30,770.77
  4. Step 4: Simplify right side
    40,860.13x = 1,735,145,257.84
  5. Step 5: Solve for x
    x = 1,735,145,257.84/40,860.13
  6. Step 6: Final answer
    x = 42,465.49

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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.