Home / 86,823.40-130,278.30-49,412.20

Finding the Fourth Proportional to 86,823.40, 130,278.30 and 49,412.20

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Solution

The fourth proportional to 86,823.40, 130,278.30 and 49,412.20 is: 74,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,823.40 : 130,278.30 = 49,412.20 : x
  2. Step 2: Convert to fraction form
    86,823.40/130,278.30 = 49,412.20/x
  3. Step 3: Cross multiply
    86,823.40x = 130,278.30 × 49,412.20
  4. Step 4: Simplify right side
    86,823.40x = 6,437,337,415.26
  5. Step 5: Solve for x
    x = 6,437,337,415.26/86,823.40
  6. Step 6: Final answer
    x = 74,142.89

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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.