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Finding the Fourth Proportional to 84,979.81, 127,482.27 and 31,658.32

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Solution

The fourth proportional to 84,979.81, 127,482.27 and 31,658.32 is: 47,492.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,979.81 : 127,482.27 = 31,658.32 : x
  2. Step 2: Convert to fraction form
    84,979.81/127,482.27 = 31,658.32/x
  3. Step 3: Cross multiply
    84,979.81x = 127,482.27 × 31,658.32
  4. Step 4: Simplify right side
    84,979.81x = 4,035,874,497.99
  5. Step 5: Solve for x
    x = 4,035,874,497.99/84,979.81
  6. Step 6: Final answer
    x = 47,492.16

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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.