Home / 42,740.40-64,110.60-11,575.60

Finding the Fourth Proportional to 42,740.40, 64,110.60 and 11,575.60

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Solution

The fourth proportional to 42,740.40, 64,110.60 and 11,575.60 is: 17,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,740.40 : 64,110.60 = 11,575.60 : x
  2. Step 2: Convert to fraction form
    42,740.40/64,110.60 = 11,575.60/x
  3. Step 3: Cross multiply
    42,740.40x = 64,110.60 × 11,575.60
  4. Step 4: Simplify right side
    42,740.40x = 742,118,661.36
  5. Step 5: Solve for x
    x = 742,118,661.36/42,740.40
  6. Step 6: Final answer
    x = 17,363.40

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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.