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Finding the Fourth Proportional to 91,888.88, 137,860.99 and 28,706.45

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Solution

The fourth proportional to 91,888.88, 137,860.99 and 28,706.45 is: 43,068.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.88 : 137,860.99 = 28,706.45 : x
  2. Step 2: Convert to fraction form
    91,888.88/137,860.99 = 28,706.45/x
  3. Step 3: Cross multiply
    91,888.88x = 137,860.99 × 28,706.45
  4. Step 4: Simplify right side
    91,888.88x = 3,957,499,616.39
  5. Step 5: Solve for x
    x = 3,957,499,616.39/91,888.88
  6. Step 6: Final answer
    x = 43,068.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.