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Finding the Fourth Proportional to 42,109,719.40, 63,164,579.10 and 42,109,719.40

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Solution

The fourth proportional to 42,109,719.40, 63,164,579.10 and 42,109,719.40 is: 63,164,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,109,719.40 : 63,164,579.10 = 42,109,719.40 : x
  2. Step 2: Convert to fraction form
    42,109,719.40/63,164,579.10 = 42,109,719.40/x
  3. Step 3: Cross multiply
    42,109,719.40x = 63,164,579.10 × 42,109,719.40
  4. Step 4: Simplify right side
    42,109,719.40x = 2,659,842,701,920,104.50
  5. Step 5: Solve for x
    x = 2,659,842,701,920,104.50/42,109,719.40
  6. Step 6: Final answer
    x = 63,164,579.10

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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.