Home / 86,890.13-119,901.95-48,640.86

Finding the Fourth Proportional to 86,890.13, 119,901.95 and 48,640.86

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Solution

The fourth proportional to 86,890.13, 119,901.95 and 48,640.86 is: 67,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,890.13 : 119,901.95 = 48,640.86 : x
  2. Step 2: Convert to fraction form
    86,890.13/119,901.95 = 48,640.86/x
  3. Step 3: Cross multiply
    86,890.13x = 119,901.95 × 48,640.86
  4. Step 4: Simplify right side
    86,890.13x = 5,832,134,513.71
  5. Step 5: Solve for x
    x = 5,832,134,513.71/86,890.13
  6. Step 6: Final answer
    x = 67,120.80

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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.