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Finding the Fourth Proportional to 54,663.52, 81,985.76 and 15,210.08

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Solution

The fourth proportional to 54,663.52, 81,985.76 and 15,210.08 is: 22,812.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,663.52 : 81,985.76 = 15,210.08 : x
  2. Step 2: Convert to fraction form
    54,663.52/81,985.76 = 15,210.08/x
  3. Step 3: Cross multiply
    54,663.52x = 81,985.76 × 15,210.08
  4. Step 4: Simplify right side
    54,663.52x = 1,247,009,968.46
  5. Step 5: Solve for x
    x = 1,247,009,968.46/54,663.52
  6. Step 6: Final answer
    x = 22,812.47

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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.