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Finding the Fourth Proportional to 56,420.76, 84,620.16 and 21,363.16

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Solution

The fourth proportional to 56,420.76, 84,620.16 and 21,363.16 is: 32,040.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.76 : 84,620.16 = 21,363.16 : x
  2. Step 2: Convert to fraction form
    56,420.76/84,620.16 = 21,363.16/x
  3. Step 3: Cross multiply
    56,420.76x = 84,620.16 × 21,363.16
  4. Step 4: Simplify right side
    56,420.76x = 1,807,754,017.31
  5. Step 5: Solve for x
    x = 1,807,754,017.31/56,420.76
  6. Step 6: Final answer
    x = 32,040.58

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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.