Home / 56,618.77-78,133.81-31,126.75

Finding the Fourth Proportional to 56,618.77, 78,133.81 and 31,126.75

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Solution

The fourth proportional to 56,618.77, 78,133.81 and 31,126.75 is: 42,954.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,618.77 : 78,133.81 = 31,126.75 : x
  2. Step 2: Convert to fraction form
    56,618.77/78,133.81 = 31,126.75/x
  3. Step 3: Cross multiply
    56,618.77x = 78,133.81 × 31,126.75
  4. Step 4: Simplify right side
    56,618.77x = 2,432,051,570.42
  5. Step 5: Solve for x
    x = 2,432,051,570.42/56,618.77
  6. Step 6: Final answer
    x = 42,954.86

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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.