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Finding the Fourth Proportional to 98,391.84, 135,756.59 and 57,549.62

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Solution

The fourth proportional to 98,391.84, 135,756.59 and 57,549.62 is: 79,404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,391.84 : 135,756.59 = 57,549.62 : x
  2. Step 2: Convert to fraction form
    98,391.84/135,756.59 = 57,549.62/x
  3. Step 3: Cross multiply
    98,391.84x = 135,756.59 × 57,549.62
  4. Step 4: Simplify right side
    98,391.84x = 7,812,739,200.46
  5. Step 5: Solve for x
    x = 7,812,739,200.46/98,391.84
  6. Step 6: Final answer
    x = 79,404.34

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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.