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Finding the Fourth Proportional to 84,088.72, 126,133.08 and 31,484.08

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Solution

The fourth proportional to 84,088.72, 126,133.08 and 31,484.08 is: 47,226.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,088.72 : 126,133.08 = 31,484.08 : x
  2. Step 2: Convert to fraction form
    84,088.72/126,133.08 = 31,484.08/x
  3. Step 3: Cross multiply
    84,088.72x = 126,133.08 × 31,484.08
  4. Step 4: Simplify right side
    84,088.72x = 3,971,183,981.37
  5. Step 5: Solve for x
    x = 3,971,183,981.37/84,088.72
  6. Step 6: Final answer
    x = 47,226.12

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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.