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Finding the Fourth Proportional to 98,464.76, 135,879.60 and 56,022.40

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Solution

The fourth proportional to 98,464.76, 135,879.60 and 56,022.40 is: 77,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,464.76 : 135,879.60 = 56,022.40 : x
  2. Step 2: Convert to fraction form
    98,464.76/135,879.60 = 56,022.40/x
  3. Step 3: Cross multiply
    98,464.76x = 135,879.60 × 56,022.40
  4. Step 4: Simplify right side
    98,464.76x = 7,612,301,303.04
  5. Step 5: Solve for x
    x = 7,612,301,303.04/98,464.76
  6. Step 6: Final answer
    x = 77,309.91

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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.