Home / 72,916.08-100,624.68-42,719.28

Finding the Fourth Proportional to 72,916.08, 100,624.68 and 42,719.28

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Solution

The fourth proportional to 72,916.08, 100,624.68 and 42,719.28 is: 58,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,916.08 : 100,624.68 = 42,719.28 : x
  2. Step 2: Convert to fraction form
    72,916.08/100,624.68 = 42,719.28/x
  3. Step 3: Cross multiply
    72,916.08x = 100,624.68 × 42,719.28
  4. Step 4: Simplify right side
    72,916.08x = 4,298,613,879.83
  5. Step 5: Solve for x
    x = 4,298,613,879.83/72,916.08
  6. Step 6: Final answer
    x = 58,952.89

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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.