Home / 86,907.90-130,405.05-34,319.10

Finding the Fourth Proportional to 86,907.90, 130,405.05 and 34,319.10

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Solution

The fourth proportional to 86,907.90, 130,405.05 and 34,319.10 is: 51,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,907.90 : 130,405.05 = 34,319.10 : x
  2. Step 2: Convert to fraction form
    86,907.90/130,405.05 = 34,319.10/x
  3. Step 3: Cross multiply
    86,907.90x = 130,405.05 × 34,319.10
  4. Step 4: Simplify right side
    86,907.90x = 4,475,383,951.46
  5. Step 5: Solve for x
    x = 4,475,383,951.46/86,907.90
  6. Step 6: Final answer
    x = 51,495.71

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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.