Home / 66,721.28-92,062.56-38,040.40

Finding the Fourth Proportional to 66,721.28, 92,062.56 and 38,040.40

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Solution

The fourth proportional to 66,721.28, 92,062.56 and 38,040.40 is: 52,488.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.28 : 92,062.56 = 38,040.40 : x
  2. Step 2: Convert to fraction form
    66,721.28/92,062.56 = 38,040.40/x
  3. Step 3: Cross multiply
    66,721.28x = 92,062.56 × 38,040.40
  4. Step 4: Simplify right side
    66,721.28x = 3,502,096,607.42
  5. Step 5: Solve for x
    x = 3,502,096,607.42/66,721.28
  6. Step 6: Final answer
    x = 52,488.45

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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.