Home / 30,562,258.42-42,172,084.77-20,660,685.68

Finding the Fourth Proportional to 30,562,258.42, 42,172,084.77 and 20,660,685.68

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Solution

The fourth proportional to 30,562,258.42, 42,172,084.77 and 20,660,685.68 is: 28,509,155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,562,258.42 : 42,172,084.77 = 20,660,685.68 : x
  2. Step 2: Convert to fraction form
    30,562,258.42/42,172,084.77 = 20,660,685.68/x
  3. Step 3: Cross multiply
    30,562,258.42x = 42,172,084.77 × 20,660,685.68
  4. Step 4: Simplify right side
    30,562,258.42x = 871,304,187,810,236.12
  5. Step 5: Solve for x
    x = 871,304,187,810,236.12/30,562,258.42
  6. Step 6: Final answer
    x = 28,509,155.83

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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.