Home / 66,938.91-100,417.76-19,557.48

Finding the Fourth Proportional to 66,938.91, 100,417.76 and 19,557.48

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Solution

The fourth proportional to 66,938.91, 100,417.76 and 19,557.48 is: 29,338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,938.91 : 100,417.76 = 19,557.48 : x
  2. Step 2: Convert to fraction form
    66,938.91/100,417.76 = 19,557.48/x
  3. Step 3: Cross multiply
    66,938.91x = 100,417.76 × 19,557.48
  4. Step 4: Simplify right side
    66,938.91x = 1,963,918,235.06
  5. Step 5: Solve for x
    x = 1,963,918,235.06/66,938.91
  6. Step 6: Final answer
    x = 29,338.96

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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.