Home / 78,563,956.51-108,421,638.92-43,756,662.43

Finding the Fourth Proportional to 78,563,956.51, 108,421,638.92 and 43,756,662.43

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Solution

The fourth proportional to 78,563,956.51, 108,421,638.92 and 43,756,662.43 is: 60,386,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563,956.51 : 108,421,638.92 = 43,756,662.43 : x
  2. Step 2: Convert to fraction form
    78,563,956.51/108,421,638.92 = 43,756,662.43/x
  3. Step 3: Cross multiply
    78,563,956.51x = 108,421,638.92 × 43,756,662.43
  4. Step 4: Simplify right side
    78,563,956.51x = 4,744,169,054,329,790
  5. Step 5: Solve for x
    x = 4,744,169,054,329,790/78,563,956.51
  6. Step 6: Final answer
    x = 60,386,076.07

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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.