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Finding the Fourth Proportional to 86,110.74, 118,890.80 and 77,007.86

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Solution

The fourth proportional to 86,110.74, 118,890.80 and 77,007.86 is: 106,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,110.74 : 118,890.80 = 77,007.86 : x
  2. Step 2: Convert to fraction form
    86,110.74/118,890.80 = 77,007.86/x
  3. Step 3: Cross multiply
    86,110.74x = 118,890.80 × 77,007.86
  4. Step 4: Simplify right side
    86,110.74x = 9,155,526,081.69
  5. Step 5: Solve for x
    x = 9,155,526,081.69/86,110.74
  6. Step 6: Final answer
    x = 106,322.70

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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.