Home / 86,458,817.11-129,688,065.76-28,166,425.51

Finding the Fourth Proportional to 86,458,817.11, 129,688,065.76 and 28,166,425.51

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Solution

The fourth proportional to 86,458,817.11, 129,688,065.76 and 28,166,425.51 is: 42,249,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,458,817.11 : 129,688,065.76 = 28,166,425.51 : x
  2. Step 2: Convert to fraction form
    86,458,817.11/129,688,065.76 = 28,166,425.51/x
  3. Step 3: Cross multiply
    86,458,817.11x = 129,688,065.76 × 28,166,425.51
  4. Step 4: Simplify right side
    86,458,817.11x = 3,652,849,243,765,022
  5. Step 5: Solve for x
    x = 3,652,849,243,765,022/86,458,817.11
  6. Step 6: Final answer
    x = 42,249,586.17

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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.