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Finding the Fourth Proportional to 71,880,893.04, 107,869,853.81 and 28,156,228.02

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Solution

The fourth proportional to 71,880,893.04, 107,869,853.81 and 28,156,228.02 is: 42,253,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,880,893.04 : 107,869,853.81 = 28,156,228.02 : x
  2. Step 2: Convert to fraction form
    71,880,893.04/107,869,853.81 = 28,156,228.02/x
  3. Step 3: Cross multiply
    71,880,893.04x = 107,869,853.81 × 28,156,228.02
  4. Step 4: Simplify right side
    71,880,893.04x = 3,037,208,200,217,645
  5. Step 5: Solve for x
    x = 3,037,208,200,217,645/71,880,893.04
  6. Step 6: Final answer
    x = 42,253,345.39

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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.