Home / 70,385.18-105,581.40-17,795.12

Finding the Fourth Proportional to 70,385.18, 105,581.40 and 17,795.12

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Solution

The fourth proportional to 70,385.18, 105,581.40 and 17,795.12 is: 26,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,385.18 : 105,581.40 = 17,795.12 : x
  2. Step 2: Convert to fraction form
    70,385.18/105,581.40 = 17,795.12/x
  3. Step 3: Cross multiply
    70,385.18x = 105,581.40 × 17,795.12
  4. Step 4: Simplify right side
    70,385.18x = 1,878,833,682.77
  5. Step 5: Solve for x
    x = 1,878,833,682.77/70,385.18
  6. Step 6: Final answer
    x = 26,693.60

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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.