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Finding the Fourth Proportional to 87,256.40, 130,903.20 and 49,834.40

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Solution

The fourth proportional to 87,256.40, 130,903.20 and 49,834.40 is: 74,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,256.40 : 130,903.20 = 49,834.40 : x
  2. Step 2: Convert to fraction form
    87,256.40/130,903.20 = 49,834.40/x
  3. Step 3: Cross multiply
    87,256.40x = 130,903.20 × 49,834.40
  4. Step 4: Simplify right side
    87,256.40x = 6,523,482,430.08
  5. Step 5: Solve for x
    x = 6,523,482,430.08/87,256.40
  6. Step 6: Final answer
    x = 74,762.22

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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.