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Finding the Fourth Proportional to 90,752, 125,237.76 and 53,057.92

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Solution

The fourth proportional to 90,752, 125,237.76 and 53,057.92 is: 73,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,752 : 125,237.76 = 53,057.92 : x
  2. Step 2: Convert to fraction form
    90,752/125,237.76 = 53,057.92/x
  3. Step 3: Cross multiply
    90,752x = 125,237.76 × 53,057.92
  4. Step 4: Simplify right side
    90,752x = 6,644,855,051.06
  5. Step 5: Solve for x
    x = 6,644,855,051.06/90,752
  6. Step 6: Final answer
    x = 73,219.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.