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Finding the Fourth Proportional to 64,652,034.60, 96,978,051.90 and 19,213,829.10

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Solution

The fourth proportional to 64,652,034.60, 96,978,051.90 and 19,213,829.10 is: 28,820,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,652,034.60 : 96,978,051.90 = 19,213,829.10 : x
  2. Step 2: Convert to fraction form
    64,652,034.60/96,978,051.90 = 19,213,829.10/x
  3. Step 3: Cross multiply
    64,652,034.60x = 96,978,051.90 × 19,213,829.10
  4. Step 4: Simplify right side
    64,652,034.60x = 1,863,319,715,657,530.50
  5. Step 5: Solve for x
    x = 1,863,319,715,657,530.50/64,652,034.60
  6. Step 6: Final answer
    x = 28,820,743.65

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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.