Home / 87,904.16-121,307.88-52,111.76

Finding the Fourth Proportional to 87,904.16, 121,307.88 and 52,111.76

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Solution

The fourth proportional to 87,904.16, 121,307.88 and 52,111.76 is: 71,914.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,904.16 : 121,307.88 = 52,111.76 : x
  2. Step 2: Convert to fraction form
    87,904.16/121,307.88 = 52,111.76/x
  3. Step 3: Cross multiply
    87,904.16x = 121,307.88 × 52,111.76
  4. Step 4: Simplify right side
    87,904.16x = 6,321,567,128.67
  5. Step 5: Solve for x
    x = 6,321,567,128.67/87,904.16
  6. Step 6: Final answer
    x = 71,914.31

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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.