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Finding the Fourth Proportional to 63,840,012.60, 89,602,765.80 and 63,840,012.60

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Solution

The fourth proportional to 63,840,012.60, 89,602,765.80 and 63,840,012.60 is: 89,602,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,840,012.60 : 89,602,765.80 = 63,840,012.60 : x
  2. Step 2: Convert to fraction form
    63,840,012.60/89,602,765.80 = 63,840,012.60/x
  3. Step 3: Cross multiply
    63,840,012.60x = 89,602,765.80 × 63,840,012.60
  4. Step 4: Simplify right side
    63,840,012.60x = 5,720,241,697,666,849
  5. Step 5: Solve for x
    x = 5,720,241,697,666,849/63,840,012.60
  6. Step 6: Final answer
    x = 89,602,765.80

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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.