Home / 86,376,400.80-129,312,658.80-77,306,474.40

Finding the Fourth Proportional to 86,376,400.80, 129,312,658.80 and 77,306,474.40

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Solution

The fourth proportional to 86,376,400.80, 129,312,658.80 and 77,306,474.40 is: 115,734,224.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,376,400.80 : 129,312,658.80 = 77,306,474.40 : x
  2. Step 2: Convert to fraction form
    86,376,400.80/129,312,658.80 = 77,306,474.40/x
  3. Step 3: Cross multiply
    86,376,400.80x = 129,312,658.80 × 77,306,474.40
  4. Step 4: Simplify right side
    86,376,400.80x = 9,996,705,747,118,136
  5. Step 5: Solve for x
    x = 9,996,705,747,118,136/86,376,400.80
  6. Step 6: Final answer
    x = 115,734,224.33

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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.