Home / 84,385.64-116,547.78-57,481.40

Finding the Fourth Proportional to 84,385.64, 116,547.78 and 57,481.40

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Solution

The fourth proportional to 84,385.64, 116,547.78 and 57,481.40 is: 79,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,385.64 : 116,547.78 = 57,481.40 : x
  2. Step 2: Convert to fraction form
    84,385.64/116,547.78 = 57,481.40/x
  3. Step 3: Cross multiply
    84,385.64x = 116,547.78 × 57,481.40
  4. Step 4: Simplify right side
    84,385.64x = 6,699,329,561.29
  5. Step 5: Solve for x
    x = 6,699,329,561.29/84,385.64
  6. Step 6: Final answer
    x = 79,389.45

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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.