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Finding the Fourth Proportional to 56,459.20, 84,722.40 and 21,402.40

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Solution

The fourth proportional to 56,459.20, 84,722.40 and 21,402.40 is: 32,116.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,459.20 : 84,722.40 = 21,402.40 : x
  2. Step 2: Convert to fraction form
    56,459.20/84,722.40 = 21,402.40/x
  3. Step 3: Cross multiply
    56,459.20x = 84,722.40 × 21,402.40
  4. Step 4: Simplify right side
    56,459.20x = 1,813,262,693.76
  5. Step 5: Solve for x
    x = 1,813,262,693.76/56,459.20
  6. Step 6: Final answer
    x = 32,116.34

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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.