Home / 87,961.02-121,386.65-51,686.93

Finding the Fourth Proportional to 87,961.02, 121,386.65 and 51,686.93

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Solution

The fourth proportional to 87,961.02, 121,386.65 and 51,686.93 is: 71,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,961.02 : 121,386.65 = 51,686.93 : x
  2. Step 2: Convert to fraction form
    87,961.02/121,386.65 = 51,686.93/x
  3. Step 3: Cross multiply
    87,961.02x = 121,386.65 × 51,686.93
  4. Step 4: Simplify right side
    87,961.02x = 6,274,102,416.12
  5. Step 5: Solve for x
    x = 6,274,102,416.12/87,961.02
  6. Step 6: Final answer
    x = 71,328.21

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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.