Home / 78,859,455.40-118,112,235.90-64,703,679.40

Finding the Fourth Proportional to 78,859,455.40, 118,112,235.90 and 64,703,679.40

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Solution

The fourth proportional to 78,859,455.40, 118,112,235.90 and 64,703,679.40 is: 96,910,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859,455.40 : 118,112,235.90 = 64,703,679.40 : x
  2. Step 2: Convert to fraction form
    78,859,455.40/118,112,235.90 = 64,703,679.40/x
  3. Step 3: Cross multiply
    78,859,455.40x = 118,112,235.90 × 64,703,679.40
  4. Step 4: Simplify right side
    78,859,455.40x = 7,642,296,244,890,771
  5. Step 5: Solve for x
    x = 7,642,296,244,890,771/78,859,455.40
  6. Step 6: Final answer
    x = 96,910,335.05

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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.