Home / 66,722.63-92,077.29-38,428.38

Finding the Fourth Proportional to 66,722.63, 92,077.29 and 38,428.38

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Solution

The fourth proportional to 66,722.63, 92,077.29 and 38,428.38 is: 53,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.63 : 92,077.29 = 38,428.38 : x
  2. Step 2: Convert to fraction form
    66,722.63/92,077.29 = 38,428.38/x
  3. Step 3: Cross multiply
    66,722.63x = 92,077.29 × 38,428.38
  4. Step 4: Simplify right side
    66,722.63x = 3,538,381,089.49
  5. Step 5: Solve for x
    x = 3,538,381,089.49/66,722.63
  6. Step 6: Final answer
    x = 53,031.20

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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.