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Finding the Fourth Proportional to 73,045.65, 109,354.95 and 66,041.79

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Solution

The fourth proportional to 73,045.65, 109,354.95 and 66,041.79 is: 98,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,045.65 : 109,354.95 = 66,041.79 : x
  2. Step 2: Convert to fraction form
    73,045.65/109,354.95 = 66,041.79/x
  3. Step 3: Cross multiply
    73,045.65x = 109,354.95 × 66,041.79
  4. Step 4: Simplify right side
    73,045.65x = 7,221,996,643.36
  5. Step 5: Solve for x
    x = 7,221,996,643.36/73,045.65
  6. Step 6: Final answer
    x = 98,869.63

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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.