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Finding the Fourth Proportional to 70,658.79, 105,995.13 and 26,275.11

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Solution

The fourth proportional to 70,658.79, 105,995.13 and 26,275.11 is: 39,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,658.79 : 105,995.13 = 26,275.11 : x
  2. Step 2: Convert to fraction form
    70,658.79/105,995.13 = 26,275.11/x
  3. Step 3: Cross multiply
    70,658.79x = 105,995.13 × 26,275.11
  4. Step 4: Simplify right side
    70,658.79x = 2,785,033,700.21
  5. Step 5: Solve for x
    x = 2,785,033,700.21/70,658.79
  6. Step 6: Final answer
    x = 39,415.25

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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.