Home / 81,717,211.80-122,623,510.50-45,356,117.40

Finding the Fourth Proportional to 81,717,211.80, 122,623,510.50 and 45,356,117.40

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Solution

The fourth proportional to 81,717,211.80, 122,623,510.50 and 45,356,117.40 is: 68,060,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717,211.80 : 122,623,510.50 = 45,356,117.40 : x
  2. Step 2: Convert to fraction form
    81,717,211.80/122,623,510.50 = 45,356,117.40/x
  3. Step 3: Cross multiply
    81,717,211.80x = 122,623,510.50 × 45,356,117.40
  4. Step 4: Simplify right side
    81,717,211.80x = 5,561,726,338,238,133
  5. Step 5: Solve for x
    x = 5,561,726,338,238,133/81,717,211.80
  6. Step 6: Final answer
    x = 68,060,647.39

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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.