Home / 70,089.11-105,135.16-25,113.40

Finding the Fourth Proportional to 70,089.11, 105,135.16 and 25,113.40

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Solution

The fourth proportional to 70,089.11, 105,135.16 and 25,113.40 is: 37,670.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,089.11 : 105,135.16 = 25,113.40 : x
  2. Step 2: Convert to fraction form
    70,089.11/105,135.16 = 25,113.40/x
  3. Step 3: Cross multiply
    70,089.11x = 105,135.16 × 25,113.40
  4. Step 4: Simplify right side
    70,089.11x = 2,640,301,273.67
  5. Step 5: Solve for x
    x = 2,640,301,273.67/70,089.11
  6. Step 6: Final answer
    x = 37,670.63

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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.