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Finding the Fourth Proportional to 47,959,583.80, 71,908,444.07 and 18,816,368.11

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Solution

The fourth proportional to 47,959,583.80, 71,908,444.07 and 18,816,368.11 is: 28,212,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,959,583.80 : 71,908,444.07 = 18,816,368.11 : x
  2. Step 2: Convert to fraction form
    47,959,583.80/71,908,444.07 = 18,816,368.11/x
  3. Step 3: Cross multiply
    47,959,583.80x = 71,908,444.07 × 18,816,368.11
  4. Step 4: Simplify right side
    47,959,583.80x = 1,353,055,754,145,502.25
  5. Step 5: Solve for x
    x = 1,353,055,754,145,502.25/47,959,583.80
  6. Step 6: Final answer
    x = 28,212,416.52

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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.