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Finding the Fourth Proportional to 72,053.40, 107,999.10 and 34,631.40

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Solution

The fourth proportional to 72,053.40, 107,999.10 and 34,631.40 is: 51,908.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,053.40 : 107,999.10 = 34,631.40 : x
  2. Step 2: Convert to fraction form
    72,053.40/107,999.10 = 34,631.40/x
  3. Step 3: Cross multiply
    72,053.40x = 107,999.10 × 34,631.40
  4. Step 4: Simplify right side
    72,053.40x = 3,740,160,031.74
  5. Step 5: Solve for x
    x = 3,740,160,031.74/72,053.40
  6. Step 6: Final answer
    x = 51,908.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.