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Finding the Fourth Proportional to 77,980.76, 107,487.06 and 60,954.92

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Solution

The fourth proportional to 77,980.76, 107,487.06 and 60,954.92 is: 84,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,980.76 : 107,487.06 = 60,954.92 : x
  2. Step 2: Convert to fraction form
    77,980.76/107,487.06 = 60,954.92/x
  3. Step 3: Cross multiply
    77,980.76x = 107,487.06 × 60,954.92
  4. Step 4: Simplify right side
    77,980.76x = 6,551,865,143.34
  5. Step 5: Solve for x
    x = 6,551,865,143.34/77,980.76
  6. Step 6: Final answer
    x = 84,019.00

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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.