Home / 102,047.19-140,822.39-56,724.05

Finding the Fourth Proportional to 102,047.19, 140,822.39 and 56,724.05

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Solution

The fourth proportional to 102,047.19, 140,822.39 and 56,724.05 is: 78,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,047.19 : 140,822.39 = 56,724.05 : x
  2. Step 2: Convert to fraction form
    102,047.19/140,822.39 = 56,724.05/x
  3. Step 3: Cross multiply
    102,047.19x = 140,822.39 × 56,724.05
  4. Step 4: Simplify right side
    102,047.19x = 7,988,015,303.75
  5. Step 5: Solve for x
    x = 7,988,015,303.75/102,047.19
  6. Step 6: Final answer
    x = 78,277.66

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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.