Home / 42,740.20-64,110.30-11,575.45

Finding the Fourth Proportional to 42,740.20, 64,110.30 and 11,575.45

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Solution

The fourth proportional to 42,740.20, 64,110.30 and 11,575.45 is: 17,363.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,740.20 : 64,110.30 = 11,575.45 : x
  2. Step 2: Convert to fraction form
    42,740.20/64,110.30 = 11,575.45/x
  3. Step 3: Cross multiply
    42,740.20x = 64,110.30 × 11,575.45
  4. Step 4: Simplify right side
    42,740.20x = 742,105,572.14
  5. Step 5: Solve for x
    x = 742,105,572.14/42,740.20
  6. Step 6: Final answer
    x = 17,363.18

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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.