Home / 80,827.46-121,128.83-70,275.86

Finding the Fourth Proportional to 80,827.46, 121,128.83 and 70,275.86

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Solution

The fourth proportional to 80,827.46, 121,128.83 and 70,275.86 is: 105,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,827.46 : 121,128.83 = 70,275.86 : x
  2. Step 2: Convert to fraction form
    80,827.46/121,128.83 = 70,275.86/x
  3. Step 3: Cross multiply
    80,827.46x = 121,128.83 × 70,275.86
  4. Step 4: Simplify right side
    80,827.46x = 8,512,432,699.04
  5. Step 5: Solve for x
    x = 8,512,432,699.04/80,827.46
  6. Step 6: Final answer
    x = 105,316.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.