Home / 86,934.30-130,420.35-49,512.30

Finding the Fourth Proportional to 86,934.30, 130,420.35 and 49,512.30

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Solution

The fourth proportional to 86,934.30, 130,420.35 and 49,512.30 is: 74,279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,934.30 : 130,420.35 = 49,512.30 : x
  2. Step 2: Convert to fraction form
    86,934.30/130,420.35 = 49,512.30/x
  3. Step 3: Cross multiply
    86,934.30x = 130,420.35 × 49,512.30
  4. Step 4: Simplify right side
    86,934.30x = 6,457,411,495.31
  5. Step 5: Solve for x
    x = 6,457,411,495.31/86,934.30
  6. Step 6: Final answer
    x = 74,279.21

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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.