Home / 55,210.13-76,188.32-30,680.86

Finding the Fourth Proportional to 55,210.13, 76,188.32 and 30,680.86

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Solution

The fourth proportional to 55,210.13, 76,188.32 and 30,680.86 is: 42,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,210.13 : 76,188.32 = 30,680.86 : x
  2. Step 2: Convert to fraction form
    55,210.13/76,188.32 = 30,680.86/x
  3. Step 3: Cross multiply
    55,210.13x = 76,188.32 × 30,680.86
  4. Step 4: Simplify right side
    55,210.13x = 2,337,523,300.41
  5. Step 5: Solve for x
    x = 2,337,523,300.41/55,210.13
  6. Step 6: Final answer
    x = 42,338.66

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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.