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Finding the Fourth Proportional to 66,719.95, 92,051.18 and 38,425.03

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Solution

The fourth proportional to 66,719.95, 92,051.18 and 38,425.03 is: 53,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,719.95 : 92,051.18 = 38,425.03 : x
  2. Step 2: Convert to fraction form
    66,719.95/92,051.18 = 38,425.03/x
  3. Step 3: Cross multiply
    66,719.95x = 92,051.18 × 38,425.03
  4. Step 4: Simplify right side
    66,719.95x = 3,537,069,160.91
  5. Step 5: Solve for x
    x = 3,537,069,160.91/66,719.95
  6. Step 6: Final answer
    x = 53,013.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.