Home / 86,305,573.12-129,509,435.34-31,756,465.61

Finding the Fourth Proportional to 86,305,573.12, 129,509,435.34 and 31,756,465.61

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Solution

The fourth proportional to 86,305,573.12, 129,509,435.34 and 31,756,465.61 is: 47,653,491.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,305,573.12 : 129,509,435.34 = 31,756,465.61 : x
  2. Step 2: Convert to fraction form
    86,305,573.12/129,509,435.34 = 31,756,465.61/x
  3. Step 3: Cross multiply
    86,305,573.12x = 129,509,435.34 × 31,756,465.61
  4. Step 4: Simplify right side
    86,305,573.12x = 4,112,761,928,897,681.50
  5. Step 5: Solve for x
    x = 4,112,761,928,897,681.50/86,305,573.12
  6. Step 6: Final answer
    x = 47,653,491.89

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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.