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Finding the Fourth Proportional to 87,386, 130,797.06 and 45,208.01

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Solution

The fourth proportional to 87,386, 130,797.06 and 45,208.01 is: 67,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,386 : 130,797.06 = 45,208.01 : x
  2. Step 2: Convert to fraction form
    87,386/130,797.06 = 45,208.01/x
  3. Step 3: Cross multiply
    87,386x = 130,797.06 × 45,208.01
  4. Step 4: Simplify right side
    87,386x = 5,913,074,796.45
  5. Step 5: Solve for x
    x = 5,913,074,796.45/87,386
  6. Step 6: Final answer
    x = 67,666.16

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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.