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Finding the Fourth Proportional to 84,762.67, 127,151.06 and 42,621.07

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Solution

The fourth proportional to 84,762.67, 127,151.06 and 42,621.07 is: 63,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,762.67 : 127,151.06 = 42,621.07 : x
  2. Step 2: Convert to fraction form
    84,762.67/127,151.06 = 42,621.07/x
  3. Step 3: Cross multiply
    84,762.67x = 127,151.06 × 42,621.07
  4. Step 4: Simplify right side
    84,762.67x = 5,419,314,228.83
  5. Step 5: Solve for x
    x = 5,419,314,228.83/84,762.67
  6. Step 6: Final answer
    x = 63,935.15

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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.