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Finding the Fourth Proportional to 67,708.58, 93,426.80 and 39,029.40

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Solution

The fourth proportional to 67,708.58, 93,426.80 and 39,029.40 is: 53,854.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,708.58 : 93,426.80 = 39,029.40 : x
  2. Step 2: Convert to fraction form
    67,708.58/93,426.80 = 39,029.40/x
  3. Step 3: Cross multiply
    67,708.58x = 93,426.80 × 39,029.40
  4. Step 4: Simplify right side
    67,708.58x = 3,646,391,752.77
  5. Step 5: Solve for x
    x = 3,646,391,752.77/67,708.58
  6. Step 6: Final answer
    x = 53,854.21

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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.