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Finding the Fourth Proportional to 99,472.48, 149,210.27 and 55,379.47

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Solution

The fourth proportional to 99,472.48, 149,210.27 and 55,379.47 is: 83,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,472.48 : 149,210.27 = 55,379.47 : x
  2. Step 2: Convert to fraction form
    99,472.48/149,210.27 = 55,379.47/x
  3. Step 3: Cross multiply
    99,472.48x = 149,210.27 × 55,379.47
  4. Step 4: Simplify right side
    99,472.48x = 8,263,185,671.16
  5. Step 5: Solve for x
    x = 8,263,185,671.16/99,472.48
  6. Step 6: Final answer
    x = 83,070.07

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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.