Home / 66,431.29-99,646.80-26,979.16

Finding the Fourth Proportional to 66,431.29, 99,646.80 and 26,979.16

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Solution

The fourth proportional to 66,431.29, 99,646.80 and 26,979.16 is: 40,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431.29 : 99,646.80 = 26,979.16 : x
  2. Step 2: Convert to fraction form
    66,431.29/99,646.80 = 26,979.16/x
  3. Step 3: Cross multiply
    66,431.29x = 99,646.80 × 26,979.16
  4. Step 4: Simplify right side
    66,431.29x = 2,688,386,960.69
  5. Step 5: Solve for x
    x = 2,688,386,960.69/66,431.29
  6. Step 6: Final answer
    x = 40,468.69

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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.