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Finding the Fourth Proportional to 67,438.84, 93,070.62 and 39,148.84

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Solution

The fourth proportional to 67,438.84, 93,070.62 and 39,148.84 is: 54,028.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,438.84 : 93,070.62 = 39,148.84 : x
  2. Step 2: Convert to fraction form
    67,438.84/93,070.62 = 39,148.84/x
  3. Step 3: Cross multiply
    67,438.84x = 93,070.62 × 39,148.84
  4. Step 4: Simplify right side
    67,438.84x = 3,643,606,811.08
  5. Step 5: Solve for x
    x = 3,643,606,811.08/67,438.84
  6. Step 6: Final answer
    x = 54,028.31

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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.