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Finding the Fourth Proportional to 56,663,863.60, 84,995,795.40 and 52,128,900.40

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Solution

The fourth proportional to 56,663,863.60, 84,995,795.40 and 52,128,900.40 is: 78,193,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,663,863.60 : 84,995,795.40 = 52,128,900.40 : x
  2. Step 2: Convert to fraction form
    56,663,863.60/84,995,795.40 = 52,128,900.40/x
  3. Step 3: Cross multiply
    56,663,863.60x = 84,995,795.40 × 52,128,900.40
  4. Step 4: Simplify right side
    56,663,863.60x = 4,430,737,352,825,378.50
  5. Step 5: Solve for x
    x = 4,430,737,352,825,378.50/56,663,863.60
  6. Step 6: Final answer
    x = 78,193,350.60

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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.