Home / 84,345.31-116,321.14-69,982.40

Finding the Fourth Proportional to 84,345.31, 116,321.14 and 69,982.40

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Solution

The fourth proportional to 84,345.31, 116,321.14 and 69,982.40 is: 96,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,345.31 : 116,321.14 = 69,982.40 : x
  2. Step 2: Convert to fraction form
    84,345.31/116,321.14 = 69,982.40/x
  3. Step 3: Cross multiply
    84,345.31x = 116,321.14 × 69,982.40
  4. Step 4: Simplify right side
    84,345.31x = 8,140,432,547.94
  5. Step 5: Solve for x
    x = 8,140,432,547.94/84,345.31
  6. Step 6: Final answer
    x = 96,513.16

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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.