Home / 86,917.16-119,947.38-56,721.80

Finding the Fourth Proportional to 86,917.16, 119,947.38 and 56,721.80

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Solution

The fourth proportional to 86,917.16, 119,947.38 and 56,721.80 is: 78,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,917.16 : 119,947.38 = 56,721.80 : x
  2. Step 2: Convert to fraction form
    86,917.16/119,947.38 = 56,721.80/x
  3. Step 3: Cross multiply
    86,917.16x = 119,947.38 × 56,721.80
  4. Step 4: Simplify right side
    86,917.16x = 6,803,631,298.88
  5. Step 5: Solve for x
    x = 6,803,631,298.88/86,917.16
  6. Step 6: Final answer
    x = 78,277.19

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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.