Home / 78,859,489.40-118,112,286.90-64,703,713.40

Finding the Fourth Proportional to 78,859,489.40, 118,112,286.90 and 64,703,713.40

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Solution

The fourth proportional to 78,859,489.40, 118,112,286.90 and 64,703,713.40 is: 96,910,386.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859,489.40 : 118,112,286.90 = 64,703,713.40 : x
  2. Step 2: Convert to fraction form
    78,859,489.40/118,112,286.90 = 64,703,713.40/x
  3. Step 3: Cross multiply
    78,859,489.40x = 118,112,286.90 × 64,703,713.40
  4. Step 4: Simplify right side
    78,859,489.40x = 7,642,303,560,596,175
  5. Step 5: Solve for x
    x = 7,642,303,560,596,175/78,859,489.40
  6. Step 6: Final answer
    x = 96,910,386.04

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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.