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Finding the Fourth Proportional to 56,438.80, 84,853.40 and 52,784.40

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Solution

The fourth proportional to 56,438.80, 84,853.40 and 52,784.40 is: 79,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,438.80 : 84,853.40 = 52,784.40 : x
  2. Step 2: Convert to fraction form
    56,438.80/84,853.40 = 52,784.40/x
  3. Step 3: Cross multiply
    56,438.80x = 84,853.40 × 52,784.40
  4. Step 4: Simplify right side
    56,438.80x = 4,478,935,806.96
  5. Step 5: Solve for x
    x = 4,478,935,806.96/56,438.80
  6. Step 6: Final answer
    x = 79,359.16

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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.