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Finding the Fourth Proportional to 78,563,868.88, 108,421,517.80 and 43,756,574.80

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Solution

The fourth proportional to 78,563,868.88, 108,421,517.80 and 43,756,574.80 is: 60,385,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563,868.88 : 108,421,517.80 = 43,756,574.80 : x
  2. Step 2: Convert to fraction form
    78,563,868.88/108,421,517.80 = 43,756,574.80/x
  3. Step 3: Cross multiply
    78,563,868.88x = 108,421,517.80 × 43,756,574.80
  4. Step 4: Simplify right side
    78,563,868.88x = 4,744,154,253,545,231
  5. Step 5: Solve for x
    x = 4,744,154,253,545,231/78,563,868.88
  6. Step 6: Final answer
    x = 60,385,955.03

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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.