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Finding the Fourth Proportional to 28,371,877.60, 39,821,405.60 and 28,371,877.60

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Solution

The fourth proportional to 28,371,877.60, 39,821,405.60 and 28,371,877.60 is: 39,821,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371,877.60 : 39,821,405.60 = 28,371,877.60 : x
  2. Step 2: Convert to fraction form
    28,371,877.60/39,821,405.60 = 28,371,877.60/x
  3. Step 3: Cross multiply
    28,371,877.60x = 39,821,405.60 × 28,371,877.60
  4. Step 4: Simplify right side
    28,371,877.60x = 1,129,808,045,543,154.75
  5. Step 5: Solve for x
    x = 1,129,808,045,543,154.75/28,371,877.60
  6. Step 6: Final answer
    x = 39,821,405.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.