Home / 86,080,692-128,572,427.79-77,870,703.72

Finding the Fourth Proportional to 86,080,692, 128,572,427.79 and 77,870,703.72

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Solution

The fourth proportional to 86,080,692, 128,572,427.79 and 77,870,703.72 is: 116,309,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,080,692 : 128,572,427.79 = 77,870,703.72 : x
  2. Step 2: Convert to fraction form
    86,080,692/128,572,427.79 = 77,870,703.72/x
  3. Step 3: Cross multiply
    86,080,692x = 128,572,427.79 × 77,870,703.72
  4. Step 4: Simplify right side
    86,080,692x = 10,012,025,430,996,184
  5. Step 5: Solve for x
    x = 10,012,025,430,996,184/86,080,692
  6. Step 6: Final answer
    x = 116,309,769.34

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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.