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Finding the Fourth Proportional to 42,365, 63,547.50 and 14,663

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Solution

The fourth proportional to 42,365, 63,547.50 and 14,663 is: 21,994.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,365 : 63,547.50 = 14,663 : x
  2. Step 2: Convert to fraction form
    42,365/63,547.50 = 14,663/x
  3. Step 3: Cross multiply
    42,365x = 63,547.50 × 14,663
  4. Step 4: Simplify right side
    42,365x = 931,796,992.50
  5. Step 5: Solve for x
    x = 931,796,992.50/42,365
  6. Step 6: Final answer
    x = 21,994.50

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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.