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Finding the Fourth Proportional to 73,142.88, 100,908.59 and 42,510.88

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Solution

The fourth proportional to 73,142.88, 100,908.59 and 42,510.88 is: 58,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,142.88 : 100,908.59 = 42,510.88 : x
  2. Step 2: Convert to fraction form
    73,142.88/100,908.59 = 42,510.88/x
  3. Step 3: Cross multiply
    73,142.88x = 100,908.59 × 42,510.88
  4. Step 4: Simplify right side
    73,142.88x = 4,289,712,960.46
  5. Step 5: Solve for x
    x = 4,289,712,960.46/73,142.88
  6. Step 6: Final answer
    x = 58,648.40

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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.