Home / 56,127.36-77,457.60-30,979.20

Finding the Fourth Proportional to 56,127.36, 77,457.60 and 30,979.20

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Solution

The fourth proportional to 56,127.36, 77,457.60 and 30,979.20 is: 42,752.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,127.36 : 77,457.60 = 30,979.20 : x
  2. Step 2: Convert to fraction form
    56,127.36/77,457.60 = 30,979.20/x
  3. Step 3: Cross multiply
    56,127.36x = 77,457.60 × 30,979.20
  4. Step 4: Simplify right side
    56,127.36x = 2,399,574,481.92
  5. Step 5: Solve for x
    x = 2,399,574,481.92/56,127.36
  6. Step 6: Final answer
    x = 42,752.31

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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.