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Finding the Fourth Proportional to 77,958.01, 107,598.75 and 49,259.45

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Solution

The fourth proportional to 77,958.01, 107,598.75 and 49,259.45 is: 67,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,958.01 : 107,598.75 = 49,259.45 : x
  2. Step 2: Convert to fraction form
    77,958.01/107,598.75 = 49,259.45/x
  3. Step 3: Cross multiply
    77,958.01x = 107,598.75 × 49,259.45
  4. Step 4: Simplify right side
    77,958.01x = 5,300,255,027.34
  5. Step 5: Solve for x
    x = 5,300,255,027.34/77,958.01
  6. Step 6: Final answer
    x = 67,988.59

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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.