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Finding the Fourth Proportional to 75,424.88, 104,088.36 and 45,199.76

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Solution

The fourth proportional to 75,424.88, 104,088.36 and 45,199.76 is: 62,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,424.88 : 104,088.36 = 45,199.76 : x
  2. Step 2: Convert to fraction form
    75,424.88/104,088.36 = 45,199.76/x
  3. Step 3: Cross multiply
    75,424.88x = 104,088.36 × 45,199.76
  4. Step 4: Simplify right side
    75,424.88x = 4,704,768,890.79
  5. Step 5: Solve for x
    x = 4,704,768,890.79/75,424.88
  6. Step 6: Final answer
    x = 62,376.88

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1.5x scale

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.