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Finding the Fourth Proportional to 18,087,652.80, 27,134,978.40 and 5,308,574.40

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Solution

The fourth proportional to 18,087,652.80, 27,134,978.40 and 5,308,574.40 is: 7,963,888.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087,652.80 : 27,134,978.40 = 5,308,574.40 : x
  2. Step 2: Convert to fraction form
    18,087,652.80/27,134,978.40 = 5,308,574.40/x
  3. Step 3: Cross multiply
    18,087,652.80x = 27,134,978.40 × 5,308,574.40
  4. Step 4: Simplify right side
    18,087,652.80x = 144,048,051,678,792.97
  5. Step 5: Solve for x
    x = 144,048,051,678,792.97/18,087,652.80
  6. Step 6: Final answer
    x = 7,963,888.59

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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.