Home / 56,509.48-77,979.18-31,357

Finding the Fourth Proportional to 56,509.48, 77,979.18 and 31,357

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Solution

The fourth proportional to 56,509.48, 77,979.18 and 31,357 is: 43,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,509.48 : 77,979.18 = 31,357 : x
  2. Step 2: Convert to fraction form
    56,509.48/77,979.18 = 31,357/x
  3. Step 3: Cross multiply
    56,509.48x = 77,979.18 × 31,357
  4. Step 4: Simplify right side
    56,509.48x = 2,445,193,147.26
  5. Step 5: Solve for x
    x = 2,445,193,147.26/56,509.48
  6. Step 6: Final answer
    x = 43,270.49

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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.