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Finding the Fourth Proportional to 71,775.76, 99,039.99 and 43,089.34

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Solution

The fourth proportional to 71,775.76, 99,039.99 and 43,089.34 is: 59,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,775.76 : 99,039.99 = 43,089.34 : x
  2. Step 2: Convert to fraction form
    71,775.76/99,039.99 = 43,089.34/x
  3. Step 3: Cross multiply
    71,775.76x = 99,039.99 × 43,089.34
  4. Step 4: Simplify right side
    71,775.76x = 4,267,567,802.71
  5. Step 5: Solve for x
    x = 4,267,567,802.71/71,775.76
  6. Step 6: Final answer
    x = 59,456.95

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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.