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Finding the Fourth Proportional to 70,038.80, 96,653.36 and 38,207.72

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Solution

The fourth proportional to 70,038.80, 96,653.36 and 38,207.72 is: 52,726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.80 : 96,653.36 = 38,207.72 : x
  2. Step 2: Convert to fraction form
    70,038.80/96,653.36 = 38,207.72/x
  3. Step 3: Cross multiply
    70,038.80x = 96,653.36 × 38,207.72
  4. Step 4: Simplify right side
    70,038.80x = 3,692,904,515.94
  5. Step 5: Solve for x
    x = 3,692,904,515.94/70,038.80
  6. Step 6: Final answer
    x = 52,726.55

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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.