Home / 90,857.31-125,376.84-56,864.37

Finding the Fourth Proportional to 90,857.31, 125,376.84 and 56,864.37

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Solution

The fourth proportional to 90,857.31, 125,376.84 and 56,864.37 is: 78,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,857.31 : 125,376.84 = 56,864.37 : x
  2. Step 2: Convert to fraction form
    90,857.31/125,376.84 = 56,864.37/x
  3. Step 3: Cross multiply
    90,857.31x = 125,376.84 × 56,864.37
  4. Step 4: Simplify right side
    90,857.31x = 7,129,475,019.19
  5. Step 5: Solve for x
    x = 7,129,475,019.19/90,857.31
  6. Step 6: Final answer
    x = 78,468.92

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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.