Home / 87,690.16-121,013.53-53,224.93

Finding the Fourth Proportional to 87,690.16, 121,013.53 and 53,224.93

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Solution

The fourth proportional to 87,690.16, 121,013.53 and 53,224.93 is: 73,451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.16 : 121,013.53 = 53,224.93 : x
  2. Step 2: Convert to fraction form
    87,690.16/121,013.53 = 53,224.93/x
  3. Step 3: Cross multiply
    87,690.16x = 121,013.53 × 53,224.93
  4. Step 4: Simplify right side
    87,690.16x = 6,440,936,681.51
  5. Step 5: Solve for x
    x = 6,440,936,681.51/87,690.16
  6. Step 6: Final answer
    x = 73,451.08

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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.