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Finding the Fourth Proportional to 90,871.99, 136,335.78 and 46,530.11

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Solution

The fourth proportional to 90,871.99, 136,335.78 and 46,530.11 is: 69,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.99 : 136,335.78 = 46,530.11 : x
  2. Step 2: Convert to fraction form
    90,871.99/136,335.78 = 46,530.11/x
  3. Step 3: Cross multiply
    90,871.99x = 136,335.78 × 46,530.11
  4. Step 4: Simplify right side
    90,871.99x = 6,343,718,840.34
  5. Step 5: Solve for x
    x = 6,343,718,840.34/90,871.99
  6. Step 6: Final answer
    x = 69,809.40

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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.