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Finding the Fourth Proportional to 94,886.17, 130,858.11 and 78,727.90

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Solution

The fourth proportional to 94,886.17, 130,858.11 and 78,727.90 is: 108,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,886.17 : 130,858.11 = 78,727.90 : x
  2. Step 2: Convert to fraction form
    94,886.17/130,858.11 = 78,727.90/x
  3. Step 3: Cross multiply
    94,886.17x = 130,858.11 × 78,727.90
  4. Step 4: Simplify right side
    94,886.17x = 10,302,184,033.07
  5. Step 5: Solve for x
    x = 10,302,184,033.07/94,886.17
  6. Step 6: Final answer
    x = 108,574.14

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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.