Home / 72,011.47-99,359.92-41,779.28

Finding the Fourth Proportional to 72,011.47, 99,359.92 and 41,779.28

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Solution

The fourth proportional to 72,011.47, 99,359.92 and 41,779.28 is: 57,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011.47 : 99,359.92 = 41,779.28 : x
  2. Step 2: Convert to fraction form
    72,011.47/99,359.92 = 41,779.28/x
  3. Step 3: Cross multiply
    72,011.47x = 99,359.92 × 41,779.28
  4. Step 4: Simplify right side
    72,011.47x = 4,151,185,918.46
  5. Step 5: Solve for x
    x = 4,151,185,918.46/72,011.47
  6. Step 6: Final answer
    x = 57,646.18

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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.