Home / 56,129.90-77,460.39-30,979.34

Finding the Fourth Proportional to 56,129.90, 77,460.39 and 30,979.34

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Solution

The fourth proportional to 56,129.90, 77,460.39 and 30,979.34 is: 42,752.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,129.90 : 77,460.39 = 30,979.34 : x
  2. Step 2: Convert to fraction form
    56,129.90/77,460.39 = 30,979.34/x
  3. Step 3: Cross multiply
    56,129.90x = 77,460.39 × 30,979.34
  4. Step 4: Simplify right side
    56,129.90x = 2,399,671,758.34
  5. Step 5: Solve for x
    x = 2,399,671,758.34/56,129.90
  6. Step 6: Final answer
    x = 42,752.11

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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.