Home / 86,234,694.69-128,692,074.60-77,033,460.81

Finding the Fourth Proportional to 86,234,694.69, 128,692,074.60 and 77,033,460.81

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Solution

The fourth proportional to 86,234,694.69, 128,692,074.60 and 77,033,460.81 is: 114,960,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,234,694.69 : 128,692,074.60 = 77,033,460.81 : x
  2. Step 2: Convert to fraction form
    86,234,694.69/128,692,074.60 = 77,033,460.81/x
  3. Step 3: Cross multiply
    86,234,694.69x = 128,692,074.60 × 77,033,460.81
  4. Step 4: Simplify right side
    86,234,694.69x = 9,913,595,885,256,696
  5. Step 5: Solve for x
    x = 9,913,595,885,256,696/86,234,694.69
  6. Step 6: Final answer
    x = 114,960,642.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.