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Finding the Fourth Proportional to 91,841.51, 126,746.95 and 61,162.00

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Solution

The fourth proportional to 91,841.51, 126,746.95 and 61,162.00 is: 84,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,841.51 : 126,746.95 = 61,162.00 : x
  2. Step 2: Convert to fraction form
    91,841.51/126,746.95 = 61,162.00/x
  3. Step 3: Cross multiply
    91,841.51x = 126,746.95 × 61,162.00
  4. Step 4: Simplify right side
    91,841.51x = 7,752,096,322.17
  5. Step 5: Solve for x
    x = 7,752,096,322.17/91,841.51
  6. Step 6: Final answer
    x = 84,407.33

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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.