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Finding the Fourth Proportional to 56,461.52, 84,681.48 and 21,389.60

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Solution

The fourth proportional to 56,461.52, 84,681.48 and 21,389.60 is: 32,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,461.52 : 84,681.48 = 21,389.60 : x
  2. Step 2: Convert to fraction form
    56,461.52/84,681.48 = 21,389.60/x
  3. Step 3: Cross multiply
    56,461.52x = 84,681.48 × 21,389.60
  4. Step 4: Simplify right side
    56,461.52x = 1,811,302,984.61
  5. Step 5: Solve for x
    x = 1,811,302,984.61/56,461.52
  6. Step 6: Final answer
    x = 32,080.31

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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.