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Finding the Fourth Proportional to 75,044.64, 112,400.40 and 53,921.28

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Solution

The fourth proportional to 75,044.64, 112,400.40 and 53,921.28 is: 80,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,044.64 : 112,400.40 = 53,921.28 : x
  2. Step 2: Convert to fraction form
    75,044.64/112,400.40 = 53,921.28/x
  3. Step 3: Cross multiply
    75,044.64x = 112,400.40 × 53,921.28
  4. Step 4: Simplify right side
    75,044.64x = 6,060,773,440.51
  5. Step 5: Solve for x
    x = 6,060,773,440.51/75,044.64
  6. Step 6: Final answer
    x = 80,762.24

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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.