Home / 86,643,566.80-129,964,347.48-21,065,076.40

Finding the Fourth Proportional to 86,643,566.80, 129,964,347.48 and 21,065,076.40

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Solution

The fourth proportional to 86,643,566.80, 129,964,347.48 and 21,065,076.40 is: 31,597,370.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,566.80 : 129,964,347.48 = 21,065,076.40 : x
  2. Step 2: Convert to fraction form
    86,643,566.80/129,964,347.48 = 21,065,076.40/x
  3. Step 3: Cross multiply
    86,643,566.80x = 129,964,347.48 × 21,065,076.40
  4. Step 4: Simplify right side
    86,643,566.80x = 2,737,708,908,942,347.50
  5. Step 5: Solve for x
    x = 2,737,708,908,942,347.50/86,643,566.80
  6. Step 6: Final answer
    x = 31,597,370.82

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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.