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Finding the Fourth Proportional to 46,990.89, 70,468.75 and 18,901.45

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Solution

The fourth proportional to 46,990.89, 70,468.75 and 18,901.45 is: 28,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,990.89 : 70,468.75 = 18,901.45 : x
  2. Step 2: Convert to fraction form
    46,990.89/70,468.75 = 18,901.45/x
  3. Step 3: Cross multiply
    46,990.89x = 70,468.75 × 18,901.45
  4. Step 4: Simplify right side
    46,990.89x = 1,331,961,554.69
  5. Step 5: Solve for x
    x = 1,331,961,554.69/46,990.89
  6. Step 6: Final answer
    x = 28,345.10

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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.