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Finding the Fourth Proportional to 58,329,781.79, 87,482,795.99 and 21,428,989.01

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Solution

The fourth proportional to 58,329,781.79, 87,482,795.99 and 21,428,989.01 is: 32,139,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,329,781.79 : 87,482,795.99 = 21,428,989.01 : x
  2. Step 2: Convert to fraction form
    58,329,781.79/87,482,795.99 = 21,428,989.01/x
  3. Step 3: Cross multiply
    58,329,781.79x = 87,482,795.99 × 21,428,989.01
  4. Step 4: Simplify right side
    58,329,781.79x = 1,874,667,873,449,940.50
  5. Step 5: Solve for x
    x = 1,874,667,873,449,940.50/58,329,781.79
  6. Step 6: Final answer
    x = 32,139,120.29

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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.