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Finding the Fourth Proportional to 46,988.19, 70,509.81 and 18,903.87

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Solution

The fourth proportional to 46,988.19, 70,509.81 and 18,903.87 is: 28,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,988.19 : 70,509.81 = 18,903.87 : x
  2. Step 2: Convert to fraction form
    46,988.19/70,509.81 = 18,903.87/x
  3. Step 3: Cross multiply
    46,988.19x = 70,509.81 × 18,903.87
  4. Step 4: Simplify right side
    46,988.19x = 1,332,908,281.96
  5. Step 5: Solve for x
    x = 1,332,908,281.96/46,988.19
  6. Step 6: Final answer
    x = 28,366.88

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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.