Home / 78,624,279.30-117,936,418.95-64,753,669.20

Finding the Fourth Proportional to 78,624,279.30, 117,936,418.95 and 64,753,669.20

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Solution

The fourth proportional to 78,624,279.30, 117,936,418.95 and 64,753,669.20 is: 97,130,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,279.30 : 117,936,418.95 = 64,753,669.20 : x
  2. Step 2: Convert to fraction form
    78,624,279.30/117,936,418.95 = 64,753,669.20/x
  3. Step 3: Cross multiply
    78,624,279.30x = 117,936,418.95 × 64,753,669.20
  4. Step 4: Simplify right side
    78,624,279.30x = 7,636,815,859,320,912
  5. Step 5: Solve for x
    x = 7,636,815,859,320,912/78,624,279.30
  6. Step 6: Final answer
    x = 97,130,503.80

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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.