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Finding the Fourth Proportional to 56,160, 84,304.80 and 28,516.32

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Solution

The fourth proportional to 56,160, 84,304.80 and 28,516.32 is: 42,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,160 : 84,304.80 = 28,516.32 : x
  2. Step 2: Convert to fraction form
    56,160/84,304.80 = 28,516.32/x
  3. Step 3: Cross multiply
    56,160x = 84,304.80 × 28,516.32
  4. Step 4: Simplify right side
    56,160x = 2,404,062,654.34
  5. Step 5: Solve for x
    x = 2,404,062,654.34/56,160
  6. Step 6: Final answer
    x = 42,807.38

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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.