Home / 55,790.13-76,990.98-30,639.63

Finding the Fourth Proportional to 55,790.13, 76,990.98 and 30,639.63

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Solution

The fourth proportional to 55,790.13, 76,990.98 and 30,639.63 is: 42,283.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,790.13 : 76,990.98 = 30,639.63 : x
  2. Step 2: Convert to fraction form
    55,790.13/76,990.98 = 30,639.63/x
  3. Step 3: Cross multiply
    55,790.13x = 76,990.98 × 30,639.63
  4. Step 4: Simplify right side
    55,790.13x = 2,358,975,140.54
  5. Step 5: Solve for x
    x = 2,358,975,140.54/55,790.13
  6. Step 6: Final answer
    x = 42,283.02

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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.