Home / 56,470.51-77,930.09-30,979.18

Finding the Fourth Proportional to 56,470.51, 77,930.09 and 30,979.18

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Solution

The fourth proportional to 56,470.51, 77,930.09 and 30,979.18 is: 42,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,470.51 : 77,930.09 = 30,979.18 : x
  2. Step 2: Convert to fraction form
    56,470.51/77,930.09 = 30,979.18/x
  3. Step 3: Cross multiply
    56,470.51x = 77,930.09 × 30,979.18
  4. Step 4: Simplify right side
    56,470.51x = 2,414,210,285.53
  5. Step 5: Solve for x
    x = 2,414,210,285.53/56,470.51
  6. Step 6: Final answer
    x = 42,751.70

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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.