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Finding the Fourth Proportional to 68,719.40, 96,345.40 and 68,719.40

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Solution

The fourth proportional to 68,719.40, 96,345.40 and 68,719.40 is: 96,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.40 : 96,345.40 = 68,719.40 : x
  2. Step 2: Convert to fraction form
    68,719.40/96,345.40 = 68,719.40/x
  3. Step 3: Cross multiply
    68,719.40x = 96,345.40 × 68,719.40
  4. Step 4: Simplify right side
    68,719.40x = 6,620,798,080.76
  5. Step 5: Solve for x
    x = 6,620,798,080.76/68,719.40
  6. Step 6: Final answer
    x = 96,345.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.