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Finding the Fourth Proportional to 76,041.72, 104,937.84 and 42,507.72

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Solution

The fourth proportional to 76,041.72, 104,937.84 and 42,507.72 is: 58,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,041.72 : 104,937.84 = 42,507.72 : x
  2. Step 2: Convert to fraction form
    76,041.72/104,937.84 = 42,507.72/x
  3. Step 3: Cross multiply
    76,041.72x = 104,937.84 × 42,507.72
  4. Step 4: Simplify right side
    76,041.72x = 4,460,668,320.12
  5. Step 5: Solve for x
    x = 4,460,668,320.12/76,041.72
  6. Step 6: Final answer
    x = 58,660.80

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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.