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Finding the Fourth Proportional to 35,113.60, 52,670.40 and 21,980.80

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Solution

The fourth proportional to 35,113.60, 52,670.40 and 21,980.80 is: 32,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,113.60 : 52,670.40 = 21,980.80 : x
  2. Step 2: Convert to fraction form
    35,113.60/52,670.40 = 21,980.80/x
  3. Step 3: Cross multiply
    35,113.60x = 52,670.40 × 21,980.80
  4. Step 4: Simplify right side
    35,113.60x = 1,157,737,528.32
  5. Step 5: Solve for x
    x = 1,157,737,528.32/35,113.60
  6. Step 6: Final answer
    x = 32,971.20

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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.