Home / 56,549.37-77,990.41-40,386.75

Finding the Fourth Proportional to 56,549.37, 77,990.41 and 40,386.75

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Solution

The fourth proportional to 56,549.37, 77,990.41 and 40,386.75 is: 55,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,549.37 : 77,990.41 = 40,386.75 : x
  2. Step 2: Convert to fraction form
    56,549.37/77,990.41 = 40,386.75/x
  3. Step 3: Cross multiply
    56,549.37x = 77,990.41 × 40,386.75
  4. Step 4: Simplify right side
    56,549.37x = 3,149,779,472.97
  5. Step 5: Solve for x
    x = 3,149,779,472.97/56,549.37
  6. Step 6: Final answer
    x = 55,699.64

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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.