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Finding the Fourth Proportional to 86,954.64, 119,954.68 and 56,726

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Solution

The fourth proportional to 86,954.64, 119,954.68 and 56,726 is: 78,254.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,954.64 : 119,954.68 = 56,726 : x
  2. Step 2: Convert to fraction form
    86,954.64/119,954.68 = 56,726/x
  3. Step 3: Cross multiply
    86,954.64x = 119,954.68 × 56,726
  4. Step 4: Simplify right side
    86,954.64x = 6,804,549,177.68
  5. Step 5: Solve for x
    x = 6,804,549,177.68/86,954.64
  6. Step 6: Final answer
    x = 78,254.01

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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.