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Finding the Fourth Proportional to 53,000.88, 79,128.76 and 40,454.88

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Solution

The fourth proportional to 53,000.88, 79,128.76 and 40,454.88 is: 60,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,000.88 : 79,128.76 = 40,454.88 : x
  2. Step 2: Convert to fraction form
    53,000.88/79,128.76 = 40,454.88/x
  3. Step 3: Cross multiply
    53,000.88x = 79,128.76 × 40,454.88
  4. Step 4: Simplify right side
    53,000.88x = 3,201,144,490.35
  5. Step 5: Solve for x
    x = 3,201,144,490.35/53,000.88
  6. Step 6: Final answer
    x = 60,397.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.