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Finding the Fourth Proportional to 45,117, 62,289.70 and 28,990.84

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Solution

The fourth proportional to 45,117, 62,289.70 and 28,990.84 is: 40,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117 : 62,289.70 = 28,990.84 : x
  2. Step 2: Convert to fraction form
    45,117/62,289.70 = 28,990.84/x
  3. Step 3: Cross multiply
    45,117x = 62,289.70 × 28,990.84
  4. Step 4: Simplify right side
    45,117x = 1,805,830,726.35
  5. Step 5: Solve for x
    x = 1,805,830,726.35/45,117
  6. Step 6: Final answer
    x = 40,025.51

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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.