Home / 56,507.04-77,979.87-31,013.61

Finding the Fourth Proportional to 56,507.04, 77,979.87 and 31,013.61

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Solution

The fourth proportional to 56,507.04, 77,979.87 and 31,013.61 is: 42,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,507.04 : 77,979.87 = 31,013.61 : x
  2. Step 2: Convert to fraction form
    56,507.04/77,979.87 = 31,013.61/x
  3. Step 3: Cross multiply
    56,507.04x = 77,979.87 × 31,013.61
  4. Step 4: Simplify right side
    56,507.04x = 2,418,437,276.03
  5. Step 5: Solve for x
    x = 2,418,437,276.03/56,507.04
  6. Step 6: Final answer
    x = 42,798.87

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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.