Home / 83,681.28-115,446.75-53,458.74

Finding the Fourth Proportional to 83,681.28, 115,446.75 and 53,458.74

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Solution

The fourth proportional to 83,681.28, 115,446.75 and 53,458.74 is: 73,751.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,681.28 : 115,446.75 = 53,458.74 : x
  2. Step 2: Convert to fraction form
    83,681.28/115,446.75 = 53,458.74/x
  3. Step 3: Cross multiply
    83,681.28x = 115,446.75 × 53,458.74
  4. Step 4: Simplify right side
    83,681.28x = 6,171,637,792.10
  5. Step 5: Solve for x
    x = 6,171,637,792.10/83,681.28
  6. Step 6: Final answer
    x = 73,751.71

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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.