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Finding the Fourth Proportional to 72,631.60, 108,655.80 and 62,879.20

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Solution

The fourth proportional to 72,631.60, 108,655.80 and 62,879.20 is: 94,066.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.60 : 108,655.80 = 62,879.20 : x
  2. Step 2: Convert to fraction form
    72,631.60/108,655.80 = 62,879.20/x
  3. Step 3: Cross multiply
    72,631.60x = 108,655.80 × 62,879.20
  4. Step 4: Simplify right side
    72,631.60x = 6,832,189,779.36
  5. Step 5: Solve for x
    x = 6,832,189,779.36/72,631.60
  6. Step 6: Final answer
    x = 94,066.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.