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Finding the Fourth Proportional to 81,574.59, 112,594.95 and 53,279.67

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Solution

The fourth proportional to 81,574.59, 112,594.95 and 53,279.67 is: 73,540.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,574.59 : 112,594.95 = 53,279.67 : x
  2. Step 2: Convert to fraction form
    81,574.59/112,594.95 = 53,279.67/x
  3. Step 3: Cross multiply
    81,574.59x = 112,594.95 × 53,279.67
  4. Step 4: Simplify right side
    81,574.59x = 5,999,021,779.67
  5. Step 5: Solve for x
    x = 5,999,021,779.67/81,574.59
  6. Step 6: Final answer
    x = 73,540.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.