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Finding the Fourth Proportional to 60,472, 90,698.28 and 42,888.52

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Solution

The fourth proportional to 60,472, 90,698.28 and 42,888.52 is: 64,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,472 : 90,698.28 = 42,888.52 : x
  2. Step 2: Convert to fraction form
    60,472/90,698.28 = 42,888.52/x
  3. Step 3: Cross multiply
    60,472x = 90,698.28 × 42,888.52
  4. Step 4: Simplify right side
    60,472x = 3,889,914,995.75
  5. Step 5: Solve for x
    x = 3,889,914,995.75/60,472
  6. Step 6: Final answer
    x = 64,325.89

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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.