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Finding the Fourth Proportional to 75,332.64, 112,955.22 and 28,560

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Solution

The fourth proportional to 75,332.64, 112,955.22 and 28,560 is: 42,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,332.64 : 112,955.22 = 28,560 : x
  2. Step 2: Convert to fraction form
    75,332.64/112,955.22 = 28,560/x
  3. Step 3: Cross multiply
    75,332.64x = 112,955.22 × 28,560
  4. Step 4: Simplify right side
    75,332.64x = 3,226,001,083.20
  5. Step 5: Solve for x
    x = 3,226,001,083.20/75,332.64
  6. Step 6: Final answer
    x = 42,823.42

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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.