Home / 86,305,574.12-129,509,436.84-31,756,466.61

Finding the Fourth Proportional to 86,305,574.12, 129,509,436.84 and 31,756,466.61

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Solution

The fourth proportional to 86,305,574.12, 129,509,436.84 and 31,756,466.61 is: 47,653,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,305,574.12 : 129,509,436.84 = 31,756,466.61 : x
  2. Step 2: Convert to fraction form
    86,305,574.12/129,509,436.84 = 31,756,466.61/x
  3. Step 3: Cross multiply
    86,305,574.12x = 129,509,436.84 × 31,756,466.61
  4. Step 4: Simplify right side
    86,305,574.12x = 4,112,762,106,689,364
  5. Step 5: Solve for x
    x = 4,112,762,106,689,364/86,305,574.12
  6. Step 6: Final answer
    x = 47,653,493.40

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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.