Home / 56,025-77,319.36-30,879.36

Finding the Fourth Proportional to 56,025, 77,319.36 and 30,879.36

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Solution

The fourth proportional to 56,025, 77,319.36 and 30,879.36 is: 42,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,025 : 77,319.36 = 30,879.36 : x
  2. Step 2: Convert to fraction form
    56,025/77,319.36 = 30,879.36/x
  3. Step 3: Cross multiply
    56,025x = 77,319.36 × 30,879.36
  4. Step 4: Simplify right side
    56,025x = 2,387,572,352.41
  5. Step 5: Solve for x
    x = 2,387,572,352.41/56,025
  6. Step 6: Final answer
    x = 42,616.20

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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.