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Finding the Fourth Proportional to 42,345.48, 63,495.48 and 14,256.20

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Solution

The fourth proportional to 42,345.48, 63,495.48 and 14,256.20 is: 21,376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,345.48 : 63,495.48 = 14,256.20 : x
  2. Step 2: Convert to fraction form
    42,345.48/63,495.48 = 14,256.20/x
  3. Step 3: Cross multiply
    42,345.48x = 63,495.48 × 14,256.20
  4. Step 4: Simplify right side
    42,345.48x = 905,204,261.98
  5. Step 5: Solve for x
    x = 905,204,261.98/42,345.48
  6. Step 6: Final answer
    x = 21,376.64

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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.