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Finding the Fourth Proportional to 79,970.51, 119,952.12 and 26,658.74

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Solution

The fourth proportional to 79,970.51, 119,952.12 and 26,658.74 is: 39,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,970.51 : 119,952.12 = 26,658.74 : x
  2. Step 2: Convert to fraction form
    79,970.51/119,952.12 = 26,658.74/x
  3. Step 3: Cross multiply
    79,970.51x = 119,952.12 × 26,658.74
  4. Step 4: Simplify right side
    79,970.51x = 3,197,772,379.53
  5. Step 5: Solve for x
    x = 3,197,772,379.53/79,970.51
  6. Step 6: Final answer
    x = 39,986.89

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1.5x scale

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.