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Finding the Fourth Proportional to 94,129.80, 129,908.10 and 53,835.66

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Solution

The fourth proportional to 94,129.80, 129,908.10 and 53,835.66 is: 74,298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,129.80 : 129,908.10 = 53,835.66 : x
  2. Step 2: Convert to fraction form
    94,129.80/129,908.10 = 53,835.66/x
  3. Step 3: Cross multiply
    94,129.80x = 129,908.10 × 53,835.66
  4. Step 4: Simplify right side
    94,129.80x = 6,993,688,302.85
  5. Step 5: Solve for x
    x = 6,993,688,302.85/94,129.80
  6. Step 6: Final answer
    x = 74,298.34

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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.