Home / 56,259.76-77,638.36-31,109.24

Finding the Fourth Proportional to 56,259.76, 77,638.36 and 31,109.24

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Solution

The fourth proportional to 56,259.76, 77,638.36 and 31,109.24 is: 42,930.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,259.76 : 77,638.36 = 31,109.24 : x
  2. Step 2: Convert to fraction form
    56,259.76/77,638.36 = 31,109.24/x
  3. Step 3: Cross multiply
    56,259.76x = 77,638.36 × 31,109.24
  4. Step 4: Simplify right side
    56,259.76x = 2,415,270,374.45
  5. Step 5: Solve for x
    x = 2,415,270,374.45/56,259.76
  6. Step 6: Final answer
    x = 42,930.69

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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.