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Finding the Fourth Proportional to 54,455,477.60, 81,683,216.40 and 42,126,046.40

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Solution

The fourth proportional to 54,455,477.60, 81,683,216.40 and 42,126,046.40 is: 63,189,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455,477.60 : 81,683,216.40 = 42,126,046.40 : x
  2. Step 2: Convert to fraction form
    54,455,477.60/81,683,216.40 = 42,126,046.40/x
  3. Step 3: Cross multiply
    54,455,477.60x = 81,683,216.40 × 42,126,046.40
  4. Step 4: Simplify right side
    54,455,477.60x = 3,440,990,964,167,641
  5. Step 5: Solve for x
    x = 3,440,990,964,167,641/54,455,477.60
  6. Step 6: Final answer
    x = 63,189,069.60

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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.