Home / 86,377,276.80-129,313,972.80-77,307,350.40

Finding the Fourth Proportional to 86,377,276.80, 129,313,972.80 and 77,307,350.40

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Solution

The fourth proportional to 86,377,276.80, 129,313,972.80 and 77,307,350.40 is: 115,735,538.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,377,276.80 : 129,313,972.80 = 77,307,350.40 : x
  2. Step 2: Convert to fraction form
    86,377,276.80/129,313,972.80 = 77,307,350.40/x
  3. Step 3: Cross multiply
    86,377,276.80x = 129,313,972.80 × 77,307,350.40
  4. Step 4: Simplify right side
    86,377,276.80x = 9,996,920,606,865,670
  5. Step 5: Solve for x
    x = 9,996,920,606,865,670/86,377,276.80
  6. Step 6: Final answer
    x = 115,735,538.06

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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.