Home / 86,376,401.80-129,312,660.30-77,306,475.40

Finding the Fourth Proportional to 86,376,401.80, 129,312,660.30 and 77,306,475.40

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Solution

The fourth proportional to 86,376,401.80, 129,312,660.30 and 77,306,475.40 is: 115,734,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,376,401.80 : 129,312,660.30 = 77,306,475.40 : x
  2. Step 2: Convert to fraction form
    86,376,401.80/129,312,660.30 = 77,306,475.40/x
  3. Step 3: Cross multiply
    86,376,401.80x = 129,312,660.30 × 77,306,475.40
  4. Step 4: Simplify right side
    86,376,401.80x = 9,996,705,992,390,508
  5. Step 5: Solve for x
    x = 9,996,705,992,390,508/86,376,401.80
  6. Step 6: Final answer
    x = 115,734,225.83

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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.