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Finding the Fourth Proportional to 77,925.20, 116,887.80 and 42,846.80

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Solution

The fourth proportional to 77,925.20, 116,887.80 and 42,846.80 is: 64,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,925.20 : 116,887.80 = 42,846.80 : x
  2. Step 2: Convert to fraction form
    77,925.20/116,887.80 = 42,846.80/x
  3. Step 3: Cross multiply
    77,925.20x = 116,887.80 × 42,846.80
  4. Step 4: Simplify right side
    77,925.20x = 5,008,268,189.04
  5. Step 5: Solve for x
    x = 5,008,268,189.04/77,925.20
  6. Step 6: Final answer
    x = 64,270.20

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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.