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Finding the Fourth Proportional to 66,088.80, 99,123.60 and 19,336.80

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Solution

The fourth proportional to 66,088.80, 99,123.60 and 19,336.80 is: 29,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,088.80 : 99,123.60 = 19,336.80 : x
  2. Step 2: Convert to fraction form
    66,088.80/99,123.60 = 19,336.80/x
  3. Step 3: Cross multiply
    66,088.80x = 99,123.60 × 19,336.80
  4. Step 4: Simplify right side
    66,088.80x = 1,916,733,228.48
  5. Step 5: Solve for x
    x = 1,916,733,228.48/66,088.80
  6. Step 6: Final answer
    x = 29,002.39

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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.