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Finding the Fourth Proportional to 84,115.79, 116,079.90 and 45,875.42

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Solution

The fourth proportional to 84,115.79, 116,079.90 and 45,875.42 is: 63,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,115.79 : 116,079.90 = 45,875.42 : x
  2. Step 2: Convert to fraction form
    84,115.79/116,079.90 = 45,875.42/x
  3. Step 3: Cross multiply
    84,115.79x = 116,079.90 × 45,875.42
  4. Step 4: Simplify right side
    84,115.79x = 5,325,214,166.06
  5. Step 5: Solve for x
    x = 5,325,214,166.06/84,115.79
  6. Step 6: Final answer
    x = 63,308.14

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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.