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Finding the Fourth Proportional to 28,603,770.60, 42,905,655.90 and 13,251,030.60

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Solution

The fourth proportional to 28,603,770.60, 42,905,655.90 and 13,251,030.60 is: 19,876,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603,770.60 : 42,905,655.90 = 13,251,030.60 : x
  2. Step 2: Convert to fraction form
    28,603,770.60/42,905,655.90 = 13,251,030.60/x
  3. Step 3: Cross multiply
    28,603,770.60x = 42,905,655.90 × 13,251,030.60
  4. Step 4: Simplify right side
    28,603,770.60x = 568,544,159,243,970.50
  5. Step 5: Solve for x
    x = 568,544,159,243,970.50/28,603,770.60
  6. Step 6: Final answer
    x = 19,876,545.90

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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.