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Finding the Fourth Proportional to 70,062.55, 105,135.35 and 65,629.52

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Solution

The fourth proportional to 70,062.55, 105,135.35 and 65,629.52 is: 98,483.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,062.55 : 105,135.35 = 65,629.52 : x
  2. Step 2: Convert to fraction form
    70,062.55/105,135.35 = 65,629.52/x
  3. Step 3: Cross multiply
    70,062.55x = 105,135.35 × 65,629.52
  4. Step 4: Simplify right side
    70,062.55x = 6,899,983,056.52
  5. Step 5: Solve for x
    x = 6,899,983,056.52/70,062.55
  6. Step 6: Final answer
    x = 98,483.18

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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.