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Finding the Fourth Proportional to 77,074.76, 115,612.14 and 21,670.76

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Solution

The fourth proportional to 77,074.76, 115,612.14 and 21,670.76 is: 32,506.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,074.76 : 115,612.14 = 21,670.76 : x
  2. Step 2: Convert to fraction form
    77,074.76/115,612.14 = 21,670.76/x
  3. Step 3: Cross multiply
    77,074.76x = 115,612.14 × 21,670.76
  4. Step 4: Simplify right side
    77,074.76x = 2,505,402,939.03
  5. Step 5: Solve for x
    x = 2,505,402,939.03/77,074.76
  6. Step 6: Final answer
    x = 32,506.14

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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.