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Finding the Fourth Proportional to 8,708,792.80, 13,047,442.80 and 7,449,080.80

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Solution

The fourth proportional to 8,708,792.80, 13,047,442.80 and 7,449,080.80 is: 11,160,152.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708,792.80 : 13,047,442.80 = 7,449,080.80 : x
  2. Step 2: Convert to fraction form
    8,708,792.80/13,047,442.80 = 7,449,080.80/x
  3. Step 3: Cross multiply
    8,708,792.80x = 13,047,442.80 × 7,449,080.80
  4. Step 4: Simplify right side
    8,708,792.80x = 97,191,455,650,578.25
  5. Step 5: Solve for x
    x = 97,191,455,650,578.25/8,708,792.80
  6. Step 6: Final answer
    x = 11,160,152.49

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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.