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Finding the Fourth Proportional to 64,673,497.42, 89,022,892.88 and 56,398,961.05

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Solution

The fourth proportional to 64,673,497.42, 89,022,892.88 and 56,398,961.05 is: 77,633,016.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,673,497.42 : 89,022,892.88 = 56,398,961.05 : x
  2. Step 2: Convert to fraction form
    64,673,497.42/89,022,892.88 = 56,398,961.05/x
  3. Step 3: Cross multiply
    64,673,497.42x = 89,022,892.88 × 56,398,961.05
  4. Step 4: Simplify right side
    64,673,497.42x = 5,020,798,668,015,882
  5. Step 5: Solve for x
    x = 5,020,798,668,015,882/64,673,497.42
  6. Step 6: Final answer
    x = 77,633,016.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.