Home / 86,823.90-130,279.05-49,412.70

Finding the Fourth Proportional to 86,823.90, 130,279.05 and 49,412.70

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Solution

The fourth proportional to 86,823.90, 130,279.05 and 49,412.70 is: 74,143.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,823.90 : 130,279.05 = 49,412.70 : x
  2. Step 2: Convert to fraction form
    86,823.90/130,279.05 = 49,412.70/x
  3. Step 3: Cross multiply
    86,823.90x = 130,279.05 × 49,412.70
  4. Step 4: Simplify right side
    86,823.90x = 6,437,439,613.94
  5. Step 5: Solve for x
    x = 6,437,439,613.94/86,823.90
  6. Step 6: Final answer
    x = 74,143.64

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1.5x scale

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.