Home / 56,810.52-78,388.38-39,866.76

Finding the Fourth Proportional to 56,810.52, 78,388.38 and 39,866.76

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Solution

The fourth proportional to 56,810.52, 78,388.38 and 39,866.76 is: 55,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.52 : 78,388.38 = 39,866.76 : x
  2. Step 2: Convert to fraction form
    56,810.52/78,388.38 = 39,866.76/x
  3. Step 3: Cross multiply
    56,810.52x = 78,388.38 × 39,866.76
  4. Step 4: Simplify right side
    56,810.52x = 3,125,090,732.25
  5. Step 5: Solve for x
    x = 3,125,090,732.25/56,810.52
  6. Step 6: Final answer
    x = 55,009.01

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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.