Home / 52,158.60-78,276.30-21,016.20

Finding the Fourth Proportional to 52,158.60, 78,276.30 and 21,016.20

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Solution

The fourth proportional to 52,158.60, 78,276.30 and 21,016.20 is: 31,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,158.60 : 78,276.30 = 21,016.20 : x
  2. Step 2: Convert to fraction form
    52,158.60/78,276.30 = 21,016.20/x
  3. Step 3: Cross multiply
    52,158.60x = 78,276.30 × 21,016.20
  4. Step 4: Simplify right side
    52,158.60x = 1,645,070,376.06
  5. Step 5: Solve for x
    x = 1,645,070,376.06/52,158.60
  6. Step 6: Final answer
    x = 31,539.77

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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.