Home / 87,128.81-130,482.71-49,575.13

Finding the Fourth Proportional to 87,128.81, 130,482.71 and 49,575.13

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Solution

The fourth proportional to 87,128.81, 130,482.71 and 49,575.13 is: 74,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.81 : 130,482.71 = 49,575.13 : x
  2. Step 2: Convert to fraction form
    87,128.81/130,482.71 = 49,575.13/x
  3. Step 3: Cross multiply
    87,128.81x = 130,482.71 × 49,575.13
  4. Step 4: Simplify right side
    87,128.81x = 6,468,697,311.00
  5. Step 5: Solve for x
    x = 6,468,697,311.00/87,128.81
  6. Step 6: Final answer
    x = 74,242.92

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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.