Home / 66,378.98-99,531.56-21,981.52

Finding the Fourth Proportional to 66,378.98, 99,531.56 and 21,981.52

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Solution

The fourth proportional to 66,378.98, 99,531.56 and 21,981.52 is: 32,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,378.98 : 99,531.56 = 21,981.52 : x
  2. Step 2: Convert to fraction form
    66,378.98/99,531.56 = 21,981.52/x
  3. Step 3: Cross multiply
    66,378.98x = 99,531.56 × 21,981.52
  4. Step 4: Simplify right side
    66,378.98x = 2,187,854,976.77
  5. Step 5: Solve for x
    x = 2,187,854,976.77/66,378.98
  6. Step 6: Final answer
    x = 32,960.06

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1.5x scale

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.