Home / 86,312.20-129,468.30-51,291.40

Finding the Fourth Proportional to 86,312.20, 129,468.30 and 51,291.40

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Solution

The fourth proportional to 86,312.20, 129,468.30 and 51,291.40 is: 76,937.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,312.20 : 129,468.30 = 51,291.40 : x
  2. Step 2: Convert to fraction form
    86,312.20/129,468.30 = 51,291.40/x
  3. Step 3: Cross multiply
    86,312.20x = 129,468.30 × 51,291.40
  4. Step 4: Simplify right side
    86,312.20x = 6,640,610,362.62
  5. Step 5: Solve for x
    x = 6,640,610,362.62/86,312.20
  6. Step 6: Final answer
    x = 76,937.10

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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.