Home / 86,780.70-119,722.02-56,555.01

Finding the Fourth Proportional to 86,780.70, 119,722.02 and 56,555.01

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Solution

The fourth proportional to 86,780.70, 119,722.02 and 56,555.01 is: 78,022.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.70 : 119,722.02 = 56,555.01 : x
  2. Step 2: Convert to fraction form
    86,780.70/119,722.02 = 56,555.01/x
  3. Step 3: Cross multiply
    86,780.70x = 119,722.02 × 56,555.01
  4. Step 4: Simplify right side
    86,780.70x = 6,770,880,038.32
  5. Step 5: Solve for x
    x = 6,770,880,038.32/86,780.70
  6. Step 6: Final answer
    x = 78,022.88

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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.