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Finding the Fourth Proportional to 112,041.40, 168,029.70 and 40,955.80

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Solution

The fourth proportional to 112,041.40, 168,029.70 and 40,955.80 is: 61,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,041.40 : 168,029.70 = 40,955.80 : x
  2. Step 2: Convert to fraction form
    112,041.40/168,029.70 = 40,955.80/x
  3. Step 3: Cross multiply
    112,041.40x = 168,029.70 × 40,955.80
  4. Step 4: Simplify right side
    112,041.40x = 6,881,790,787.26
  5. Step 5: Solve for x
    x = 6,881,790,787.26/112,041.40
  6. Step 6: Final answer
    x = 61,421.86

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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.