Home / 87,798.81-121,154.71-51,507.57

Finding the Fourth Proportional to 87,798.81, 121,154.71 and 51,507.57

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Solution

The fourth proportional to 87,798.81, 121,154.71 and 51,507.57 is: 71,075.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,798.81 : 121,154.71 = 51,507.57 : x
  2. Step 2: Convert to fraction form
    87,798.81/121,154.71 = 51,507.57/x
  3. Step 3: Cross multiply
    87,798.81x = 121,154.71 × 51,507.57
  4. Step 4: Simplify right side
    87,798.81x = 6,240,384,577.39
  5. Step 5: Solve for x
    x = 6,240,384,577.39/87,798.81
  6. Step 6: Final answer
    x = 71,075.96

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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.