Home / 85,659,306.63-128,333,069.37-76,476,006.15

Finding the Fourth Proportional to 85,659,306.63, 128,333,069.37 and 76,476,006.15

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Solution

The fourth proportional to 85,659,306.63, 128,333,069.37 and 76,476,006.15 is: 114,574,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659,306.63 : 128,333,069.37 = 76,476,006.15 : x
  2. Step 2: Convert to fraction form
    85,659,306.63/128,333,069.37 = 76,476,006.15/x
  3. Step 3: Cross multiply
    85,659,306.63x = 128,333,069.37 × 76,476,006.15
  4. Step 4: Simplify right side
    85,659,306.63x = 9,814,400,602,388,498
  5. Step 5: Solve for x
    x = 9,814,400,602,388,498/85,659,306.63
  6. Step 6: Final answer
    x = 114,574,831.25

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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.