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Finding the Fourth Proportional to 70,010.86, 105,016.08 and 17,420.34

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Solution

The fourth proportional to 70,010.86, 105,016.08 and 17,420.34 is: 26,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,010.86 : 105,016.08 = 17,420.34 : x
  2. Step 2: Convert to fraction form
    70,010.86/105,016.08 = 17,420.34/x
  3. Step 3: Cross multiply
    70,010.86x = 105,016.08 × 17,420.34
  4. Step 4: Simplify right side
    70,010.86x = 1,829,415,819.07
  5. Step 5: Solve for x
    x = 1,829,415,819.07/70,010.86
  6. Step 6: Final answer
    x = 26,130.46

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1.5x scale

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.