Home / 87,928.14-121,242.71-63,681.15

Finding the Fourth Proportional to 87,928.14, 121,242.71 and 63,681.15

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Solution

The fourth proportional to 87,928.14, 121,242.71 and 63,681.15 is: 87,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,928.14 : 121,242.71 = 63,681.15 : x
  2. Step 2: Convert to fraction form
    87,928.14/121,242.71 = 63,681.15/x
  3. Step 3: Cross multiply
    87,928.14x = 121,242.71 × 63,681.15
  4. Step 4: Simplify right side
    87,928.14x = 7,720,875,361.12
  5. Step 5: Solve for x
    x = 7,720,875,361.12/87,928.14
  6. Step 6: Final answer
    x = 87,808.92

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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.