Home / 66,445.14-99,667.71-31,388.34

Finding the Fourth Proportional to 66,445.14, 99,667.71 and 31,388.34

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Solution

The fourth proportional to 66,445.14, 99,667.71 and 31,388.34 is: 47,082.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,445.14 : 99,667.71 = 31,388.34 : x
  2. Step 2: Convert to fraction form
    66,445.14/99,667.71 = 31,388.34/x
  3. Step 3: Cross multiply
    66,445.14x = 99,667.71 × 31,388.34
  4. Step 4: Simplify right side
    66,445.14x = 3,128,403,968.50
  5. Step 5: Solve for x
    x = 3,128,403,968.50/66,445.14
  6. Step 6: Final answer
    x = 47,082.51

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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.