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Finding the Fourth Proportional to 92,920.05, 128,284.12 and 67,401.91

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Solution

The fourth proportional to 92,920.05, 128,284.12 and 67,401.91 is: 93,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.05 : 128,284.12 = 67,401.91 : x
  2. Step 2: Convert to fraction form
    92,920.05/128,284.12 = 67,401.91/x
  3. Step 3: Cross multiply
    92,920.05x = 128,284.12 × 67,401.91
  4. Step 4: Simplify right side
    92,920.05x = 8,646,594,710.67
  5. Step 5: Solve for x
    x = 8,646,594,710.67/92,920.05
  6. Step 6: Final answer
    x = 93,054.13

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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.