Home / 86,522.30-129,856.35-39,210.20

Finding the Fourth Proportional to 86,522.30, 129,856.35 and 39,210.20

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Solution

The fourth proportional to 86,522.30, 129,856.35 and 39,210.20 is: 58,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,522.30 : 129,856.35 = 39,210.20 : x
  2. Step 2: Convert to fraction form
    86,522.30/129,856.35 = 39,210.20/x
  3. Step 3: Cross multiply
    86,522.30x = 129,856.35 × 39,210.20
  4. Step 4: Simplify right side
    86,522.30x = 5,091,693,454.77
  5. Step 5: Solve for x
    x = 5,091,693,454.77/86,522.30
  6. Step 6: Final answer
    x = 58,848.34

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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.