Home / 87,447.12-130,488.64-78,022.35

Finding the Fourth Proportional to 87,447.12, 130,488.64 and 78,022.35

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Solution

The fourth proportional to 87,447.12, 130,488.64 and 78,022.35 is: 116,424.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,447.12 : 130,488.64 = 78,022.35 : x
  2. Step 2: Convert to fraction form
    87,447.12/130,488.64 = 78,022.35/x
  3. Step 3: Cross multiply
    87,447.12x = 130,488.64 × 78,022.35
  4. Step 4: Simplify right side
    87,447.12x = 10,181,029,688.66
  5. Step 5: Solve for x
    x = 10,181,029,688.66/87,447.12
  6. Step 6: Final answer
    x = 116,424.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.