Home / 78,859,468.40-118,112,255.40-64,703,692.40

Finding the Fourth Proportional to 78,859,468.40, 118,112,255.40 and 64,703,692.40

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Solution

The fourth proportional to 78,859,468.40, 118,112,255.40 and 64,703,692.40 is: 96,910,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859,468.40 : 118,112,255.40 = 64,703,692.40 : x
  2. Step 2: Convert to fraction form
    78,859,468.40/118,112,255.40 = 64,703,692.40/x
  3. Step 3: Cross multiply
    78,859,468.40x = 118,112,255.40 × 64,703,692.40
  4. Step 4: Simplify right side
    78,859,468.40x = 7,642,299,042,071,839
  5. Step 5: Solve for x
    x = 7,642,299,042,071,839/78,859,468.40
  6. Step 6: Final answer
    x = 96,910,354.55

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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.